Smart Lock security improvement

Default Smart Lock feature (via Bluetooth) isn’t real secured.

We need an option to set Bluetooth signal strength for unlocking. It would increase security of this feature. Possible options for range (signal strength): low, medium, high.

Android Smart Lock feature description -

Smart Lock is a feature of Google apps, NOT MoKee.

I’m actually talking about system unlock (device unlock). Smart Lock is a part of Android system (to unlock devices easily based on location, connected devices like bands / smart watches or even wifi networks). Some alternative ROMs already includes signal strength setting for additional protection (related to Bluetooth only). So this is why i think it would be nice to include it to MoKee ROM.

So how would you tell the differences between “a far way bluetooth device with strong signal strength” or “a nearby bluetooth device with low signal strength”?