Secure Wi-Fi ID not RFID , or any other ID

Here's a note from Will Newman on WiFi ID - sounds good to me! (what's an AP??)

RFID is a system which works for the market it was developed for. However RFID or WiFiID is a different concept

In the case you quoted, there is nor problem as they have big batteries. Our solar powered units run off a single car battery all night, quite challenging in winter. You could mount an AP in client mode in the vehicle, which was switched off by a relay when the ignition is turned on so by definition the wireless device is only on when the vehicle is stationary and parked up.

You would need a WiFi zone around the compound to ensure line of sight to a number of cells, but then it could all work for vehicles.

Will