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RF Proximity Lock Ideas

nikon

Aug 17, 2011
1
Joined
Aug 17, 2011
Messages
1
Hi all,

I need your direction. I'd be more than happy to provide some kickback via paypal for those that can point me in the right direction.

I'm building an RF system in which a battery assisted passive transmitter needs to activate a lock. The idea is this: The user will be carrying a key fob/transmitter in their pocket. When the user gets within 3-6 feet of the lock, it will unlock. As soon as the key fob/transmitter leaves the 3-6 foot radius, the lock will again lock. It is a proximity lock.

I need to be pointed in the direction of how to build circuitry that would allow this type of operation. Any input would be greatly appreciated.
 

poor mystic

Apr 8, 2011
1,074
Joined
Apr 8, 2011
Messages
1,074
You need RFID technology. Open source RFID projects can be found using google, which threatens to replace us all. Still, cash is nice.
 
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