Very important question and would love some feedback.
Does anyone know of any Bluetooth device that can record if another person with a Bluetooth device, passing or within their vicinity.

I.e someone comes in for an interview with us and they have a mobile phone on them with Bluetooth. We know they came at 5pm.

Even though we don't connect to their mobile, can a device record the phone number or device, is that possible

See More: Bluetooth tracker, important