My original idea was to use RFID tags but they dont allow me to gauge the distance. Is there any other technology that works in the same way but would show me the distance?What technology would allow me to send basic information to a receiver and gauge how far away it is?
use radio frequency
the received power decreases with increase in distance
at the transmitter callibrate it to transmit signals at a constant power level
at the receiver use two circuits
one to receive the data
other to calculate the received power level
or try bluetooth but i dont know how you can calculate the distance . the bluetooth system will be integrated
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