Just to inform the group that i have successfully build a simple Door Hack
powered by Arduino micro controllers over the weekend.
1) Exit Sensor
- Hackers exiting the premises (via the front door - walking down the
staircase) will be detected by an IR sensor and the door would be unlocked.
So you need not press the door exit button (the existing button(s) still
work).
2) Door Web
- Hackers within the premises can now unlock the door by browsing to a
mobile web page hosted on an Arduino based web server (available only if
you are within the HSG wifi).
- With a click of an on screen button (hyperlink) the door will be unlocked.
- I have also exposed a REST URL on the web server to initiate the door
unlock.
- For security reasons, I will not reveal the URL here.
The setup is currently still under development and any suggestions (and
assistance) to make it better is welcomed.
Fazli has made a simple Windows Phone app to unlock the door. Stephan
February was also experimenting with a simple iPhone App that just has a
bug "Open Door" button.
> Just to inform the group that i have successfully build a simple Door Hack
> powered by Arduino micro controllers over the weekend.
> 1) Exit Sensor
> - Hackers exiting the premises (via the front door - walking down the
> staircase) will be detected by an IR sensor and the door would be unlocked.
> So you need not press the door exit button (the existing button(s) still
> work).
> 2) Door Web
> - Hackers within the premises can now unlock the door by browsing to a
> mobile web page hosted on an Arduino based web server (available only if
> you are within the HSG wifi).
> - With a click of an on screen button (hyperlink) the door will be
> unlocked.
> - I have also exposed a REST URL on the web server to initiate the door
> unlock.
> - For security reasons, I will not reveal the URL here.
> The setup is currently still under development and any suggestions (and
> assistance) to make it better is welcomed.
> Fazli has made a simple Windows Phone app to unlock the door. Stephan
> February was also experimenting with a simple iPhone App that just has a
> bug "Open Door" button.
> On Tue, Sep 25, 2012 at 10:55 AM, Michael Cheng <mcheng.w...@gmail.com> wrote:
> Hi Guys,
> Just to inform the group that i have successfully build a simple Door Hack powered by Arduino micro controllers over the weekend.
> 1) Exit Sensor
> - Hackers exiting the premises (via the front door - walking down the staircase) will be detected by an IR sensor and the door would be unlocked. So you need not press the door exit button (the existing button(s) still work).
> 2) Door Web
> - Hackers within the premises can now unlock the door by browsing to a mobile web page hosted on an Arduino based web server (available only if you are within the HSG wifi).
> - With a click of an on screen button (hyperlink) the door will be unlocked.
> - I have also exposed a REST URL on the web server to initiate the door unlock.
> - For security reasons, I will not reveal the URL here.
> The setup is currently still under development and any suggestions (and assistance) to make it better is welcomed.
> Fazli has made a simple Windows Phone app to unlock the door. Stephan February was also experimenting with a simple iPhone App that just has a bug "Open Door" button.
On Tuesday, September 25, 2012, Alvin Jiang wrote:
> Sweet! If you're willing, share your code on github.
> On 25 Sep, 2012, at 10:57 AM, Ruiwen Chua <rwc...@gmail.com<javascript:_e({}, 'cvml', 'rwc...@gmail.com');>>
> wrote:
> That's pretty awesome! Thanks Mike!
> On Tue, Sep 25, 2012 at 10:55 AM, Michael Cheng <mcheng.w...@gmail.com<javascript:_e({}, 'cvml', 'mcheng.w...@gmail.com');>
> > wrote:
>> Hi Guys,
>> Just to inform the group that i have successfully build a simple Door
>> Hack powered by Arduino micro controllers over the weekend.
>> 1) Exit Sensor
>> - Hackers exiting the premises (via the front door - walking down the
>> staircase) will be detected by an IR sensor and the door would be unlocked.
>> So you need not press the door exit button (the existing button(s) still
>> work).
>> 2) Door Web
>> - Hackers within the premises can now unlock the door by browsing to a
>> mobile web page hosted on an Arduino based web server (available only if
>> you are within the HSG wifi).
>> - With a click of an on screen button (hyperlink) the door will be
>> unlocked.
>> - I have also exposed a REST URL on the web server to initiate the door
>> unlock.
>> - For security reasons, I will not reveal the URL here.
>> The setup is currently still under development and any suggestions (and
>> assistance) to make it better is welcomed.
>> Fazli has made a simple Windows Phone app to unlock the door. Stephan
>> February was also experimenting with a simple iPhone App that just has a
>> bug "Open Door" button.
On Tuesday, September 25, 2012 1:14:35 PM UTC+8, Miccheng wrote:
> Yeah, think I should.
> On Tuesday, September 25, 2012, Alvin Jiang wrote:
>> Sweet! If you're willing, share your code on github.
>> On 25 Sep, 2012, at 10:57 AM, Ruiwen Chua wrote:
>> That's pretty awesome! Thanks Mike!
>> On Tue, Sep 25, 2012 at 10:55 AM, Michael Cheng wrote:
>>> Hi Guys,
>>> Just to inform the group that i have successfully build a simple Door >>> Hack powered by Arduino micro controllers over the weekend.
>>> 1) Exit Sensor >>> - Hackers exiting the premises (via the front door - walking down the >>> staircase) will be detected by an IR sensor and the door would be unlocked. >>> So you need not press the door exit button (the existing button(s) still >>> work).
>>> 2) Door Web >>> - Hackers within the premises can now unlock the door by browsing to a >>> mobile web page hosted on an Arduino based web server (available only if >>> you are within the HSG wifi). >>> - With a click of an on screen button (hyperlink) the door will be >>> unlocked. >>> - I have also exposed a REST URL on the web server to initiate the door >>> unlock. >>> - For security reasons, I will not reveal the URL here.
>>> The setup is currently still under development and any suggestions (and >>> assistance) to make it better is welcomed.
>>> Fazli has made a simple Windows Phone app to unlock the door. Stephan >>> February was also experimenting with a simple iPhone App that just has a >>> bug "Open Door" button.
That rocks Michael! So if I wanted to recreate this for my own use what
would be the hardware required (inclusive of door and lock)? I'm excited to
give it a try!
-- Ben
PS: Looking forward to your RasberryPi control over the projector for the
multi-media display on the door next. ;-)
On Tue, Sep 25, 2012 at 9:55 AM, Michael Cheng <mcheng.w...@gmail.com>wrote:
> Just to inform the group that i have successfully build a simple Door Hack
> powered by Arduino micro controllers over the weekend.
> 1) Exit Sensor
> - Hackers exiting the premises (via the front door - walking down the
> staircase) will be detected by an IR sensor and the door would be unlocked.
> So you need not press the door exit button (the existing button(s) still
> work).
> 2) Door Web
> - Hackers within the premises can now unlock the door by browsing to a
> mobile web page hosted on an Arduino based web server (available only if
> you are within the HSG wifi).
> - With a click of an on screen button (hyperlink) the door will be
> unlocked.
> - I have also exposed a REST URL on the web server to initiate the door
> unlock.
> - For security reasons, I will not reveal the URL here.
> The setup is currently still under development and any suggestions (and
> assistance) to make it better is welcomed.
> Fazli has made a simple Windows Phone app to unlock the door. Stephan
> February was also experimenting with a simple iPhone App that just has a
> bug "Open Door" button.
> That rocks Michael! So if I wanted to recreate this for my own use what
> would be the hardware required (inclusive of door and lock)? I'm excited to
> give it a try!
> -- Ben
> PS: Looking forward to your RasberryPi control over the projector for the
> multi-media display on the door next. ;-)
> On Tue, Sep 25, 2012 at 9:55 AM, Michael Cheng <mcheng.w...@gmail.com>wrote:
>> Hi Guys,
>> Just to inform the group that i have successfully build a simple Door
>> Hack powered by Arduino micro controllers over the weekend.
>> 1) Exit Sensor
>> - Hackers exiting the premises (via the front door - walking down the
>> staircase) will be detected by an IR sensor and the door would be unlocked.
>> So you need not press the door exit button (the existing button(s) still
>> work).
>> 2) Door Web
>> - Hackers within the premises can now unlock the door by browsing to a
>> mobile web page hosted on an Arduino based web server (available only if
>> you are within the HSG wifi).
>> - With a click of an on screen button (hyperlink) the door will be
>> unlocked.
>> - I have also exposed a REST URL on the web server to initiate the door
>> unlock.
>> - For security reasons, I will not reveal the URL here.
>> The setup is currently still under development and any suggestions (and
>> assistance) to make it better is welcomed.
>> Fazli has made a simple Windows Phone app to unlock the door. Stephan
>> February was also experimenting with a simple iPhone App that just has a
>> bug "Open Door" button.
On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mcheng.w...@gmail.com> wrote:
> Yeah, i need to improve the current implementation a bit more before i post the code + instructions.
some cars have a proximity sensor.
for example, the charging port on the Tesla automatically pops open as you approach with the connector, and the door handles pop out as you approach with the key.
what technology is that, and what would it take for us to do the same with the HSG door?
I would think that the charging connector has an IR sensor that detects
incoming object, which fires off an RFID reader. The door handle probably
has an active RFID chip (ie. powered RFID has wider range) which responds
and pops open on an active read.
> On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mcheng.w...@gmail.com> wrote:
> Yeah, i need to improve the current implementation a bit more before i
> post the code + instructions.
> some cars have a proximity sensor.
> for example, the charging port on the Tesla automatically pops open as you
> approach with the connector, and the door handles pop out as you approach
> with the key.
> what technology is that, and what would it take for us to do the same with
> the HSG door?
> I would think that the charging connector has an IR sensor that detects
> incoming object, which fires off an RFID reader. The door handle probably
> has an active RFID chip (ie. powered RFID has wider range) which responds
> and pops open on an active read.
> On Wed, Sep 26, 2012 at 3:16 PM, Meng Weng Wong <mengw...@gmail.com>wrote:
>> On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mcheng.w...@gmail.com>
>> wrote:
>> Yeah, i need to improve the current implementation a bit more before i
>> post the code + instructions.
>> some cars have a proximity sensor.
>> for example, the charging port on the Tesla automatically pops open as
>> you approach with the connector, and the door handles pop out as you
>> approach with the key.
>> what technology is that, and what would it take for us to do the same
>> with the HSG door?
On Wed, Sep 26, 2012 at 6:06 PM, Ruiwen Chua <rwc...@gmail.com> wrote:
> <brainfart>
> Or could we watch for recognised wifi MAC addresses and unlock the door
> when they come within wifi range?
> </brainfart>
> On Wed, Sep 26, 2012 at 3:58 PM, Michael Cheng <mcheng.w...@gmail.com>wrote:
>> The popping open or the proximity sensor?
>> I would think that the charging connector has an IR sensor that detects
>> incoming object, which fires off an RFID reader. The door handle probably
>> has an active RFID chip (ie. powered RFID has wider range) which responds
>> and pops open on an active read.
>> On Wed, Sep 26, 2012 at 3:16 PM, Meng Weng Wong <mengw...@gmail.com>wrote:
>>> On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mcheng.w...@gmail.com>
>>> wrote:
>>> Yeah, i need to improve the current implementation a bit more before i
>>> post the code + instructions.
>>> some cars have a proximity sensor.
>>> for example, the charging port on the Tesla automatically pops open as
>>> you approach with the connector, and the door handles pop out as you
>>> approach with the key.
>>> what technology is that, and what would it take for us to do the same
>>> with the HSG door?
Yeah the cars use active RFID, it's a cool convenience but overall a hassle changing batteries every 18 months, rotating keys to maximise battery life and getting overcharged for a new key whenever yours gets dunked in water. Doesn't help that most of them these days are ugly lumps that don't quite fit in the pocket.
Another option would be to perform bunnie's RFID transplantation hack to put the passive RFID tag into your phone/watch/hand. I've done this (phone), but since I can only fit one in I decided to go with ezlink rather than HSG door.
What RFID tag? The door system accepts either PIN or RFID tag. We don't generally issue tags to members because of the cost and administrative hassle, but it's an option worth considering if the membership is willing - besides the cool hacks you could do (and funny places to jam the RFID tags) it'd prevent PIN sharing.
> I would think that the charging connector has an IR sensor that
> detects incoming object, which fires off an RFID reader. The door
> handle probably has an active RFID chip (ie. powered RFID has wider
> range) which responds and pops open on an active read.
> Regards,
> On Wed, Sep 26, 2012 at 3:16 PM, Meng Weng Wong <mengw...@gmail.com
> [4]> wrote:
>> On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mcheng.w...@gmail.com
>> [1]> wrote:
>>> Yeah, i need to improve the current implementation a bit more
>>> before i post the code + instructions.
>> some cars have a proximity sensor.
>> for example, the charging port on the Tesla automatically pops open
>> as you approach with the connector, and the door handles pop out as
>> you approach with the key.
>> what technology is that, and what would it take for us to do the
>> same with the HSG door?
On Wed, Sep 26, 2012 at 6:32 PM, Alvin Jiang <aji...@gmail.com> wrote:
> Yeah the cars use active RFID, it's a cool convenience but overall a
> hassle changing batteries every 18 months, rotating keys to maximise
> battery life and getting overcharged for a new key whenever yours gets
> dunked in water. Doesn't help that most of them these days are ugly lumps
> that don't quite fit in the pocket.
> Another option would be to perform bunnie's RFID transplantation hack to
> put the passive RFID tag into your phone/watch/hand. I've done this
> (phone), but since I can only fit one in I decided to go with ezlink rather
> than HSG door.
> What RFID tag? The door system accepts either PIN or RFID tag. We don't
> generally issue tags to members because of the cost and administrative
> hassle, but it's an option worth considering if the membership is willing -
> besides the cool hacks you could do (and funny places to jam the RFID tags)
> it'd prevent PIN sharing.
> On 26.09.2012 15:58, Michael Cheng wrote:
>> The popping open or the proximity sensor?
>> I would think that the charging connector has an IR sensor that
>> detects incoming object, which fires off an RFID reader. The door
>> handle probably has an active RFID chip (ie. powered RFID has wider
>> range) which responds and pops open on an active read.
>> Regards,
>> On Wed, Sep 26, 2012 at 3:16 PM, Meng Weng Wong <mengw...@gmail.com
>> [4]> wrote:
>> On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mcheng.w...@gmail.com
>>> [1]> wrote:
>>> Yeah, i need to improve the current implementation a bit more
>>>> before i post the code + instructions.
>>> some cars have a proximity sensor.
>>> for example, the charging port on the Tesla automatically pops open
>>> as you approach with the connector, and the door handles pop out as
>>> you approach with the key.
>>> what technology is that, and what would it take for us to do the
>>> same with the HSG door?
> On Wed, Sep 26, 2012 at 6:06 PM, Ruiwen Chua <rwc...@gmail.com<javascript:> > > wrote:
>> <brainfart> >> Or could we watch for recognised wifi MAC addresses and unlock the door >> when they come within wifi range? >> </brainfart>
>> On Wed, Sep 26, 2012 at 3:58 PM, Michael Cheng <mchen...@gmail.com<javascript:> >> > wrote:
>>> The popping open or the proximity sensor?
>>> I would think that the charging connector has an IR sensor that detects >>> incoming object, which fires off an RFID reader. The door handle probably >>> has an active RFID chip (ie. powered RFID has wider range) which responds >>> and pops open on an active read.
>>> On Wed, Sep 26, 2012 at 3:16 PM, Meng Weng Wong <meng...@gmail.com<javascript:> >>> > wrote:
>>>> On 26 Sep, 2012, at 10:18 AM, Michael Cheng <mchen...@gmail.com<javascript:>> >>>> wrote:
>>>> Yeah, i need to improve the current implementation a bit more before i >>>> post the code + instructions.
>>>> some cars have a proximity sensor.
>>>> for example, the charging port on the Tesla automatically pops open as >>>> you approach with the connector, and the door handles pop out as you >>>> approach with the key.
>>>> what technology is that, and what would it take for us to do the same >>>> with the HSG door?
Am not sure , I do prefer the software option or linking via ezlink rather then having to carry another item on me ( friends say my wallet is like a hamburger now )
But if we decide the adopt RFID. The key would be to increase the range of detection or reduce the distance btw the reader and RFID chip.
Also regarding RFID I think it also depends on the reader as well ..... I know for my condo the RFID reader was once strong enough that it can read my passive RFID card although it was hidden in my bag ....
Perhaps we can install the reader at a lower height ? Instead of typically placing The reader near shoulder height , place it lower( nearer the waist height) . We could also boost the power of the reader to increase the range of detection ?
Another option could be Bluetooth ?the effective range is about 3-10m ? We could set it so that then trigger could be when the system detects that our phones ( Bluetooth enabled) are within range for pairing .
Regards ,
Kelvin
Sent from my iPad
On 26 Sep, 2012, at 11:53 PM, "Meng Weng Wong" <mengw...@gmail.com> wrote:
> On 26 Sep, 2012, at 6:06 PM, Ruiwen Chua <rwc...@gmail.com> wrote:
>> <brainfart>
>> Or could we watch for recognised wifi MAC addresses and unlock the door when they come within wifi range?
>> </brainfart>
> Then the door would always be open anytime anyone was in the space, because the MAC addresses would remain within wifi range when they went upstairs.
On 27 Sep, 2012, at 11:42 AM, kelvin ng <kelv...@hotmail.com> wrote:
> Another option could be Bluetooth ?the effective range is about 3-10m ? We could set it so that then trigger could be when the system detects that our phones ( Bluetooth enabled) are within range for pairing .
That won't work, because everybody upstairs will be in range.
(I remember being involved in your very first door project :))
Hack a door camera with smile detection. Only friendly / happy people admitted!
From your friendly / happy colleague, Jolyon!
From: hackerspacesg@googlegroups.com [mailto:hackerspacesg@googlegroups.com] On Behalf Of Meng Weng Wong
Sent: Thursday, 27 September, 2012 11:49 AM
To: hackerspacesg@googlegroups.com
Subject: Re: [HackerspaceSG] HSG Door Hack Project
On 27 Sep, 2012, at 11:42 AM, kelvin ng <kelv...@hotmail.com<mailto:kelv...@hotmail.com>> wrote:
Another option could be Bluetooth ?the effective range is about 3-10m ? We could set it so that then trigger could be when the system detects that our phones ( Bluetooth enabled) are within range for pairing .
That won't work, because everybody upstairs will be in range.
> Another option could be Bluetooth ?the effective range is about 3-10m ?
> We could set it so that then trigger could be when the system detects that
> our phones ( Bluetooth enabled) are within range for pairing .
> That won't work, because everybody upstairs will be in range.
unless you put a shield around the reader that blocks out signals from
upstairs and keep open the space from which you want to detect. Some
experimentation might be needed.
I got a spare PN532 NFC/RFID controller breakout
board<http://www.adafruit.com/products/364> lying
round in my store room, which can read ez-link cards.
Michael, I could bring it to Hackerspace this saturday noon; if you around,
we can try to integrate it into the door hack project ;)
On Thu, Sep 27, 2012 at 11:42 AM, kelvin ng <kelv...@hotmail.com> wrote:
> Am not sure , I do prefer the software option or linking via ezlink
> rather then having to carry another item on me ( friends say my wallet is
> like a hamburger now )
> But if we decide the adopt RFID. The key would be to increase the
> range of detection or reduce the distance btw the reader and RFID chip.
> Also regarding RFID I think it also depends on the reader as well
> ..... I know for my condo the RFID reader was once strong enough that it
> can read my passive RFID card although it was hidden in my bag ....
> Perhaps we can install the reader at a lower height ? Instead of
> typically placing The reader near shoulder height , place it lower( nearer
> the waist height) . We could also boost the power of the reader to increase
> the range of detection ?
> Another option could be Bluetooth ?the effective range is about 3-10m
> ? We could set it so that then trigger could be when the system detects
> that our phones ( Bluetooth enabled) are within range for pairing .
> Regards ,
> Kelvin
> Sent from my iPad
> On 26 Sep, 2012, at 11:53 PM, "Meng Weng Wong" <mengw...@gmail.com> wrote:
> On 26 Sep, 2012, at 6:06 PM, Ruiwen Chua <rwc...@gmail.com> wrote:
> <brainfart>
> Or could we watch for recognised wifi MAC addresses and unlock the door
> when they come within wifi range?
> </brainfart>
> Then the door would always be open anytime anyone was in the space,
> because the MAC addresses would remain within wifi range when they went
> upstairs.
On Thu, Sep 27, 2012 at 12:04:14PM +0800, Harish Pillay wrote:
> > Another option could be Bluetooth ?the effective range is about 3-10m ?
> > We could set it so that then trigger could be when the system detects that
> > our phones ( Bluetooth enabled) are within range for pairing .
> > That won't work, because everybody upstairs will be in range.
> unless you put a shield around the reader that blocks out signals from
> upstairs and keep open the space from which you want to detect. Some
> experimentation might be needed.
isn't it possible to detect the difference of coming into range and
being in range?
i don't know how bluetooth or wifi keep their connections, but wouldn't
it be possible to know if someone has been in range for a while and only
open the door if that device has not been in range for at least 5
minutes (or more)?
that would only cause problems if you sit outside while keeping in range
and then want to get back in.
greetings, martin.
-- cooperative communication with sTeam - caudium, pike, roxen and unix
services: debugging, programming, training, linux sysadmin, web development
--
pike programmer working in china societyserver.(org|net)
foresight developer community.gotpike.org foresightlinux.org
unix sysadmin (open-steam|www.caudium).org realss.com
Martin B hr http://societyserver.org/mbaehr/
On Thu, Sep 27, 2012 at 12:29 PM, David Low <davidlo...@gmail.com> wrote:
> I got a spare PN532 NFC/RFID controller breakout board<http://www.adafruit.com/products/364> lying
> round in my store room, which can read ez-link cards.
> Michael, I could bring it to Hackerspace this saturday noon; if you
> around, we can try to integrate it into the door hack project ;)
> Cheers,
> David
> On Thu, Sep 27, 2012 at 11:42 AM, kelvin ng <kelv...@hotmail.com> wrote:
>> Am not sure , I do prefer the software option or linking via ezlink
>> rather then having to carry another item on me ( friends say my wallet is
>> like a hamburger now )
>> But if we decide the adopt RFID. The key would be to increase the
>> range of detection or reduce the distance btw the reader and RFID chip.
>> Also regarding RFID I think it also depends on the reader as well
>> ..... I know for my condo the RFID reader was once strong enough that it
>> can read my passive RFID card although it was hidden in my bag ....
>> Perhaps we can install the reader at a lower height ? Instead of
>> typically placing The reader near shoulder height , place it lower( nearer
>> the waist height) . We could also boost the power of the reader to increase
>> the range of detection ?
>> Another option could be Bluetooth ?the effective range is about
>> 3-10m ? We could set it so that then trigger could be when the system
>> detects that our phones ( Bluetooth enabled) are within range for pairing .
>> Regards ,
>> Kelvin
>> Sent from my iPad
>> On 26 Sep, 2012, at 11:53 PM, "Meng Weng Wong" <mengw...@gmail.com>
>> wrote:
>> On 26 Sep, 2012, at 6:06 PM, Ruiwen Chua <rwc...@gmail.com> wrote:
>> <brainfart>
>> Or could we watch for recognised wifi MAC addresses and unlock the door
>> when they come within wifi range?
>> </brainfart>
>> Then the door would always be open anytime anyone was in the space,
>> because the MAC addresses would remain within wifi range when they went
>> upstairs.
I was actually just thinking of buying that board! Would be awesome if we
could test it out. Yes, i did have plans to integrate some RFID/MiFare
reader so that authorised users can gain access by tapping. But i'll need
to think of how to add the card ids for members - one which is easy and
hassle free.
One solution i thought of is to install a self-service kiosk somewhere in
the space where we match your PIN code to your RFID cards, etc.
On Thu, Sep 27, 2012 at 12:29 PM, David Low <davidlo...@gmail.com> wrote:
> I got a spare PN532 NFC/RFID controller breakout board<http://www.adafruit.com/products/364> lying
> round in my store room, which can read ez-link cards.
> Michael, I could bring it to Hackerspace this saturday noon; if you
> around, we can try to integrate it into the door hack project ;)
> Cheers,
> David
> On Thu, Sep 27, 2012 at 11:42 AM, kelvin ng <kelv...@hotmail.com> wrote:
>> Am not sure , I do prefer the software option or linking via ezlink
>> rather then having to carry another item on me ( friends say my wallet is
>> like a hamburger now )
>> But if we decide the adopt RFID. The key would be to increase the
>> range of detection or reduce the distance btw the reader and RFID chip.
>> Also regarding RFID I think it also depends on the reader as well
>> ..... I know for my condo the RFID reader was once strong enough that it
>> can read my passive RFID card although it was hidden in my bag ....
>> Perhaps we can install the reader at a lower height ? Instead of
>> typically placing The reader near shoulder height , place it lower( nearer
>> the waist height) . We could also boost the power of the reader to increase
>> the range of detection ?
>> Another option could be Bluetooth ?the effective range is about
>> 3-10m ? We could set it so that then trigger could be when the system
>> detects that our phones ( Bluetooth enabled) are within range for pairing .
>> Regards ,
>> Kelvin
>> Sent from my iPad
>> On 26 Sep, 2012, at 11:53 PM, "Meng Weng Wong" <mengw...@gmail.com>
>> wrote:
>> On 26 Sep, 2012, at 6:06 PM, Ruiwen Chua <rwc...@gmail.com> wrote:
>> <brainfart>
>> Or could we watch for recognised wifi MAC addresses and unlock the door
>> when they come within wifi range?
>> </brainfart>
>> Then the door would always be open anytime anyone was in the space,
>> because the MAC addresses would remain within wifi range when they went
>> upstairs.
> I was actually just thinking of buying that board! Would be awesome if we could
> test it out. Yes, i did have plans to integrate some RFID/MiFare reader so that
> authorised users can gain access by tapping. But i'll need to think of how to
> add the card ids for members - one which is easy and hassle free.
> One solution i thought of is to install a self-service kiosk somewhere in the
> space where we match your PIN code to your RFID cards, etc.
Ironically the door access control system that we tried installing over HackDo
supports that, but we took it down because we wanted to support pin-only access
as well.
I can see the use of contactless technologies RFID/NFC/Bluetooth etc. But there're always more 'leche' than useful.
But what about a simple mobile app? You go to the door launch the app and press a button to open the door.. The app can do authentication with the server (running on a Raspberry Pi) inside HSG and decide if the door should open or not..
That way most people with smartphones should be able to run it (we can even do a html5 app to make it democratic). And access control would be easy since it's all on a server and can be integrated with other systems..
On Thursday, September 27, 2012 2:12:20 PM UTC+8, hyperair wrote:
> On 27/09/2012 13:51, Michael Cheng wrote: > > I was actually just thinking of buying that board! Would be awesome if > we could > > test it out. Yes, i did have plans to integrate some RFID/MiFare reader > so that > > authorised users can gain access by tapping. But i'll need to think of > how to > > add the card ids for members - one which is easy and hassle free.
> > One solution i thought of is to install a self-service kiosk somewhere > in the > > space where we match your PIN code to your RFID cards, etc.
> Ironically the door access control system that we tried installing over > HackDo > supports that, but we took it down because we wanted to support pin-only > access > as well.
