RFID house entry system
Yiannis Costopoulos
Hi guys,
I am thinking of creating an RFID/Oyster card entry system for my flat. I know that it might seem a bit stupid, but I really like the idea of it and on top of that I have guests visiting from abroad and giving them an Oyster card for Tube and home acces is good. If a card gets lost/stolen I delete it from the system and the home is safe. On the other hand a key can always get copied.
Are there any electric locks that have dual use (RFID and physical key) in case there is a power cut or any other issue with the RFID system?
Many thanks,
Yiannis
Kieran Kunhya
Alec Wright
> Hi guys,
>
>
>
> I am thinking of creating an RFID/Oyster card entry system for my
> flat. I know that it might seem a bit stupid, but I really like the
> idea of it and on top of that I have guests visiting from abroad and
> giving them an Oyster card for Tube and home acces is good. If a card
> gets lost/stolen I delete it from the system and the home is safe. On
> the other hand a key can always get copied.
>
hackspace but then its more for convenience than anything else. The
space is rarely empty so security's not much of an issue.
Jonty Wareing
> Are there any electric locks that have dual use (RFID and physical key) in
> case there is a power cut or any other issue with the RFID system?
Pretty much all of them have this function. The magnetic ones fail open
instead, but then you wouldn't use those for your front door.
Take a look at the hackspace front door lock, that has a key for the
fail-case.
--jonty
Dirk-Willem van Gulik
On 1 Aug 2011, at 12:57, Yiannis Costopoulos wrote:
> Are there any electric locks that have dual use (RFID and physical key) in case there is a power cut or any other issue with the RFID system?
Most do. As you typically have a key on the side of the door - operating the latch. And it is receptacle (or "strike" (plate)) for the latch that most electric door systems will 'open'. This is as it is in a fixed position (i.e. not on the door) - so wiring it up is less challenging. And it also lets a wide range of electric door openers work with a wide range of locks. It makes it easy to 'deinstall' or leave in place when the control is no longer needed. As then it is suddenly a normal strike-plate.
At the high/expensive end this changes a bit - as mechanically these contraptions are not ideal.
"Electric Strike" (plate) should yield you wikipedia/google info. A fairly fancy one looks like
http://www.exteradirect.co.uk/product/unbranded/electric-lock-release-rim-latch/133/
http://www.alarmworld.co.uk/access-controls/locking/electric-strike-lock-fail-safe/prod_248.html
http://www.secure2000.co.uk/adams-rite-electric-strikes.html
http://www.youtube.com/watch?v=X7U6rrTPe-U
do read up on "fail-safe" modes. As there are two types. You normally control them by pulsing 12volt (with a relay for example) for 5 seconds. So you can drive them easily from an Arduino (just search for Arduino and relay - virtually any will do).
Dw.
Anish
Disclaimer :- author is a royal holloway alumni (isg) for both Msc and PhD
From: Kieran Kunhya
Sender: london-h...@googlegroups.com
To: London Hackspace
ReplyTo: london-h...@googlegroups.com
Subject: [london-hack-space] Re: RFID house entry system
Sent: 1 Aug 2011 13:00
> On the other hand a key can always get copied.
Wise Cricket
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