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  Messages 26 - 50 of 51 - Collapse all  -  Translate all to Translated (View all originals) < Older  Newer >
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Alvin Jiang  
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 More options Sep 27 2012, 11:09 am
From: Alvin Jiang <aji...@gmail.com>
Date: Thu, 27 Sep 2012 23:09:39 +0800
Local: Thurs, Sep 27 2012 11:09 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

I've only one request: that the system works in a basic mode to authenticate and admit users in a standalone mode without network connectivity.

One of the reasons this door system has worked for so long is that it's simple. Adding components to it as Michael has done is a fantastic solution; even if the server goes off line, is disconnected or the power fails we can still get in.

Ps. The door backup battery probably needs replacing. It's a standard 12v cell above the shutter.

On 27 Sep, 2012, at 21:01, ntt <notthe...@gmail.com> wrote:


 
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Stefan van der Bijl  
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 More options Sep 27 2012, 11:35 am
From: Stefan van der Bijl <ste...@valdebrain.com>
Date: Thu, 27 Sep 2012 23:35:21 +0800
Local: Thurs, Sep 27 2012 11:35 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Wow, what an interesting thread! My $0.02 is I'd rather not have to install
yet another app or remember another URL or rely on NFC, RFID, Bluetooth,
etc ... In the past I've integrated automation with telephony and or SMS.
Send an SMS to a special number with a code and the door opens
automagically. But I agree, more systems means more moving parts, more
stuff that can break.

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Michael Cheng  
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 More options Sep 27 2012, 11:55 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Thu, 27 Sep 2012 23:55:33 +0800
Local: Thurs, Sep 27 2012 11:55 am
Subject: Re: HSG Door Hack Project

Hi,

It'll be sometime before we can build anything close to replacing the
current door system.

The door web is a HTML5 app. You can add it as an icon on you iPhone home
screen, or create a shortcut on your Android device. It's just a huge "open
door" button. :p Only thing is that u need to be within the HSG wifi
network to access this app.

I have been using this for the past few days. I walk towards the door and
when I'm within wifi range, I trigger the app & tap the button. :)

The RFID/NFC solution is a nice add-on... And we'll really try it out as a
proof of concept until such time we can deal with the admin & maintenance
realities.

In any case, another hack I'm thinking of is a system to provide "Day Pass"
access code to guests of the space - which will expire at the end of the
day. It could be as simple as a push button & a mini-printer (like those
used for queuing).

Fun times...

On Thursday, September 27, 2012, Stefan van der Bijl wrote:

--
Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng


 
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Mats Engstrom  
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 More options Sep 27 2012, 12:29 am
From: Mats Engstrom <mats.engst...@gmail.com>
Date: Thu, 27 Sep 2012 11:29:04 +0700
Local: Thurs, Sep 27 2012 12:29 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Isn't the sg subway tokens/cards rfid based?  Usually you can at least read
a serial number from them without having the encryption keys available.
 And many credit/atm cards also have ncf nodays. So most people would have
at least one (short range) contactless device on them that could be used
for unlocking the door.

On Thu, Sep 27, 2012 at 11:04 AM, Harish Pillay <harish.pil...@gmail.com>wrote:


 
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Michael Cheng  
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 More options Sep 28 2012, 6:17 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Fri, 28 Sep 2012 18:17:36 +0800
Local: Fri, Sep 28 2012 6:17 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Hi David,

So i will see you on Saturday noon?

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng


 
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David Low  
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 More options Sep 28 2012, 7:05 am
From: David Low <davidlo...@gmail.com>
Date: Fri, 28 Sep 2012 19:04:56 +0800
Local: Fri, Sep 28 2012 7:04 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Hi Michael,

Yeah, Saturday 12 noon.
I'm also meeting up Stephan and others in hackerspace to pass them the
motorola lapdocks.

Cheers,
David

On Fri, Sep 28, 2012 at 6:17 PM, Michael Cheng <mcheng.w...@gmail.com>wrote:


 
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ntt  
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 More options Sep 28 2012, 8:46 am
From: ntt <notthe...@gmail.com>
Date: Fri, 28 Sep 2012 05:46:50 -0700 (PDT)
Local: Fri, Sep 28 2012 8:46 am
Subject: Re: HSG Door Hack Project

Did someone mention a printer??

http://www.adafruit.com/products/717

:):)


 
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Michael Cheng  
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 More options Sep 28 2012, 10:46 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Fri, 28 Sep 2012 22:46:31 +0800
Local: Fri, Sep 28 2012 10:46 am
Subject: Re: [HackerspaceSG] Re: HSG Door Hack Project

http://www.sgbotic.com/index.php?dispatch=products.view&product_id=1191

This one cheaper. Same same...

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng


 
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Meng Weng Wong  
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 More options Sep 28 2012, 3:00 pm
From: Meng Weng Wong <mengw...@gmail.com>
Date: Sat, 29 Sep 2012 03:00:01 +0800
Local: Fri, Sep 28 2012 3:00 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project
A separate console should not be necessary – the door reader is sufficient. It can automatically train by learning any card that is presented immediately after the pin is entered...

On 27 Sep, 2012, at 1:51 PM, Michael Cheng <mcheng.w...@gmail.com> wrote:


 
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Tamas Herman  
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 More options Oct 2 2012, 3:01 pm
From: Tamas Herman <hermanta...@gmail.com>
Date: Wed, 3 Oct 2012 03:01:31 +0800
Local: Tues, Oct 2 2012 3:01 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project
a little addition to the topic in case u missed it on hacker news:
https://lockitron.com/preorder

--
  tom


 
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Michael Cheng  
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 More options Oct 2 2012, 8:55 pm
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Wed, 3 Oct 2012 08:54:56 +0800
Local: Tues, Oct 2 2012 8:54 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Saw that. It looks cool.

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng


 
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Mats Engstrom  
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 More options Oct 2 2012, 9:42 pm
From: Mats Engstrom <mats.engst...@gmail.com>
Date: Wed, 3 Oct 2012 09:42:48 +0800
Local: Tues, Oct 2 2012 9:42 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Connects to internet via builtin wifi and the battery can last up to one
year....

Hmm - I don't think so Tim.
 On Oct 3, 2012 8:55 AM, "Michael Cheng" <mcheng.w...@gmail.com> wrote:


 
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Chow Loong Jin  
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 More options Oct 2 2012, 9:48 pm
From: Chow Loong Jin <hyper...@gmail.com>
Date: Wed, 03 Oct 2012 09:48:24 +0800
Local: Tues, Oct 2 2012 9:48 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project

It's a cool idea, but I'm a little suspicious over the "control Lockitron and
receive notifications from Lockitron anywhere in the world" bit, to be honest.

Judging by how most home networks are IPv4 NAT'ed unroutable addresses with
dynamic IP addresses this would mean that it probably has to pass messages
through their servers.

This would also mean that they are going to be able to unlock your door for you
if they wanted to. While I'm not saying that they're going to be abusing that
trust, it would also mean that anyone who successfully breaks into their servers
will be able to control all connected Lockitron devices.

Kind regards,
Loong Jin

On 03/10/2012 08:54, Michael Cheng wrote:

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Stephan February  
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 More options Oct 2 2012, 10:22 pm
From: Stephan February <stephan.febru...@gmail.com>
Date: Wed, 3 Oct 2012 10:22:35 +0800
Local: Tues, Oct 2 2012 10:22 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project

On Oct 3, 2012, at 9:48 AM, Chow Loong Jin wrote:

> This would also mean that they are going to be able to unlock your door for you
> if they wanted to. While I'm not saying that they're going to be abusing that
> trust, it would also mean that anyone who successfully breaks into their servers
> will be able to control all connected Lockitron devices.

I don't know how they implemented their cryptography, but it is certainly possible to both proxy requests securely, and at the same time prevent a replay or man-in-the-middle attack. It would really depend on an initial "key-exchange" or "pairing" between your mobile and the door lock. Once this "pairing is done" properly, the door would *always* be able to make a secure connection to the phone with no practical possibility of attack. It would really be easier to employ a crowbar or smash a window :)

That said, I have no idea what the implementation for their cryptographic stack looks like. So we'll just have to trust that the (insert three-letter-acronym-secret-agency-here) has not "backdoored" [pun!] into your house :)

Cheers
Stephan


 
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Chow Loong Jin  
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 More options Oct 2 2012, 11:25 pm
From: Chow Loong Jin <hyper...@gmail.com>
Date: Wed, 03 Oct 2012 11:25:31 +0800
Local: Tues, Oct 2 2012 11:25 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project

On 03/10/2012 10:22, Stephan February wrote:

https://lockitron.com/help/security says that they use https for communication.
However, it didn't mention whether or not they went the extra mile of making
sure that end-to-end communication between the phone and door is encrypted though.

So chances are that they've made sure that your door can speak to the server
securely over https, and that the server can speak to the phone securely over
https, but not such that there is another layer of encryption that prevents
eavesdropping on the server itself as you mentioned.

--
Kind regards,
Loong Jin

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Michael Cheng  
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 More options Oct 3 2012, 1:38 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Wed, 3 Oct 2012 13:37:46 +0800
Local: Wed, Oct 3 2012 1:37 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

They also have secondary unlock capabilities using Bluetooth. In case wifi
fails... :p

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng

On Wed, Oct 3, 2012 at 11:25 AM, Chow Loong Jin <hyper...@gmail.com> wrote:


 
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Chow Loong Jin  
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 More options Oct 3 2012, 1:41 am
From: Chow Loong Jin <hyper...@gmail.com>
Date: Wed, 03 Oct 2012 13:41:50 +0800
Local: Wed, Oct 3 2012 1:41 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

On 03/10/2012 13:37, Michael Cheng wrote:

> They also have secondary unlock capabilities using Bluetooth. In case wifi
> fails... :p

And NFC. That one's appealing. Tap your phone to unlock. =D

--
Kind regards,
Loong Jin

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Mats Engstrom  
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 More options Oct 3 2012, 1:48 am
From: Mats Engstrom <mats.engst...@gmail.com>
Date: Wed, 3 Oct 2012 13:47:42 +0800
Local: Wed, Oct 3 2012 1:47 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

The low power BT 4.0 is even better - get within a few meters from the door
and it's unlocked.  BT4.0 is one of the few reasons for me considering
getting an iPhone.

Having a BT4 module in the car and when you get out of the car it locks the
car and the iPhone can automagically get and store a GPS reading of your
location so you can find your way back.

On Wed, Oct 3, 2012 at 1:41 PM, Chow Loong Jin <hyper...@gmail.com> wrote:


 
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David Low  
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 More options Oct 3 2012, 2:18 am
From: David Low <davidlo...@gmail.com>
Date: Wed, 3 Oct 2012 14:18:29 +0800
Local: Wed, Oct 3 2012 2:18 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Speaking of BT 4.0, there is a Bluetooth Low Energy (BLE)
shield<http://www.seeedstudio.com/depot/bluetooth-low-energy-shield-p-1255.html>for
Arduino available in Seeedstudio. It is developed by a small team in
HK, named Red Bear Lab <http://redbearlab.com/>.

I was in their iOS sdk beta tester team, but haven't got the chance to play
with the BLE shield :(

On Wed, Oct 3, 2012 at 1:47 PM, Mats Engstrom <mats.engst...@gmail.com>wrote:


 
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David Lyon  
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 More options Oct 2 2012, 11:21 pm
From: David Lyon <david.lyon.preissh...@gmail.com>
Date: Wed, 3 Oct 2012 13:21:38 +1000
Local: Tues, Oct 2 2012 11:21 pm
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Hello,

Hope nobody minds a Sydney Hackerspace member chiming
in. Your list got interesting :-)

btw, I was chatting to a european visitor to our hackerspace
and he was mentioning:

 - http://jabberd.eu/

Don't know if anybody has tried something like this for
controlling 'devices'?

Last week my van got stolen. I replaced it with something
else but now electronic locking suddenly got much more
interesting. :-)


 
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ntt  
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 More options Oct 3 2012, 2:21 am
From: ntt <notthe...@gmail.com>
Date: Tue, 2 Oct 2012 23:21:59 -0700 (PDT)
Local: Wed, Oct 3 2012 2:21 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Just saw @codebutler of FireSheep fame (damn it's not kept up to date :( )
talk about Lockitron.. http://pbs.twimg.com/media/A4QlwlXCAAE14fi.png#twimg

I will expect him to do a nice thorough look at how it work.. Will also try
to send a word to Steve Gibsson to see if he can get a good grasp of what
it does (works better if someone with clout ask Lockitron).. But I will
keep an eye on it..

But real hackers roll their own.. :P:P


 
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Michael Cheng  
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 More options Oct 3 2012, 2:38 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Wed, 3 Oct 2012 14:37:39 +0800
Local: Wed, Oct 3 2012 2:37 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

By the way, i ordered a 2nd IR sensor so that we can mount one further down
the staircase. This is to detect an incoming visitor or outgoing visitor.
If the 2nd IR is triggered first, the door will not unlock again (as it
does now when someone comes in thru the door).

I am also experimenting with IPv6 as a possible medium to comm between the
door system with the outside world. So in theory, the door web can sit on
an AWS EC2 server, and tunnel into our IPv6 network to communicate with a
Raspberry Pi or with the Arduino Web Server to unlock the door.

Also possibly to grab a video feed off a webcam to allow visitors to check
if anyone is at the Hackerspace (ok... prob have to password protect that
or something for security & privacy reasons).

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng


 
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ntt  
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 More options Oct 3 2012, 2:39 am
From: ntt <notthe...@gmail.com>
Date: Tue, 2 Oct 2012 23:39:53 -0700 (PDT)
Local: Wed, Oct 3 2012 2:39 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Wow!! I am impressed Mic!! Jia you!


 
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Michael Cheng  
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 More options Oct 3 2012, 2:40 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Wed, 3 Oct 2012 14:40:31 +0800
Local: Wed, Oct 3 2012 2:40 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

This definitely looks like a possibility - a chatroom bot that understands
commands. I think i might have done something like this before with a
simple socket server.

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng

On Wed, Oct 3, 2012 at 11:21 AM, David Lyon <david.lyon.preissh...@gmail.com


 
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Michael Cheng  
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 More options Oct 3 2012, 2:42 am
From: Michael Cheng <mcheng.w...@gmail.com>
Date: Wed, 3 Oct 2012 14:42:21 +0800
Local: Wed, Oct 3 2012 2:42 am
Subject: Re: [HackerspaceSG] HSG Door Hack Project

Thanks. The NFC/RFID solution proved to be a little bit more involved than
i was comfortable with as a weekend hack. But will get to it eventually
thanks for David's discovery on how to read the EZ-link CAN.

Regards,

Michael Cheng CM
Mobile: +65 9185 5166
LinkedIn: http://sg.linkedin.com/in/miccheng


 
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