I think Blue tooth tracker is very important because its east to use for for example if we choose the best fitness tracker for weight lifting during gym we need the Bluetooth tracker for attach our mobile to it.

Hi
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