Proximity based beacon and accelerometer for unauthorized gate entry

RE: Proximity based beacon and accelerometer for unauthorized gate entry

Hung Bui — Wed, 30 Oct 2019 14:10:18 GMT

Okey, then you just need to know who open the gate. I think it shouldn't be too hard to implement what you need.

The accelerometer should act as a central/scanner device. And the remote/phone can broadcast advertising packet.

You also use the beacon as a remote, by either establishing a connection, or simply add the command to open/close the gate using the advertising packet.

RE: Proximity based beacon and accelerometer for unauthorized gate entry

Jarryd — Wed, 30 Oct 2019 13:43:42 GMT

Hi Hung,

Thanks for your reply. There wouldn't be any locking or unlocking mechanism. The idea is relatively simple in that I just want a notification when an unauthorized person tries to open the gate, but not every time. For example we have a problem with burglars pushing the main entrance gate open with a car. It is in this event I want a notification to know someone is breaking through, but not every time the gate is open as it may just be a resident opening the gate.

RE: Proximity based beacon and accelerometer for unauthorized gate entry

Hung Bui — Wed, 30 Oct 2019 13:10:54 GMT

Hi Jarryd,

I don't see any technical issue for doing what you described.

But from security point of view, base the locking mechanism on just the beacon is not safe. Attacker can very easily clone an advertising packet and replay it to open the door.

It's better that the door and the beacon should establish a connection and can do some authentication to verify the beacon.

You of course can use the phone as the key. But as I mentioned, some authentication should be added, not just the beacon advertising.