Sensor Network

From: Adnan (ahrizvee_at_yahoo.com)
Date: 03/26/04 

Date: 26 Mar 2004 11:13:20 -0800

I hope all of you are doing well.
I have come across a challenging project and I need your advice.

Its a security application with the following scenario:

Doors with computerized locks (biometric/swipecard/pincode), the locks
access a central server for access authentication. The catch is that
the communication between the lock (embedded computer/PCB etc) and the
server has to be wireless and the solution need to be extremely low
priced, you can't have a very expensive lock, as this is for a very
large deployment (that why wifi won't work).

Any suggestions regarding the design of the embedded computer in the
lock and the communication method between the lock and the server
would be really helpful.

I appologize is this the wrong group for this query, a pointer to the
correct group would be hihgly appreciated.

Thank you, and waiting eagerly for your response.

Regards,
A H

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