I'm looking for some way to create a cheaper indoor track system for objects. I want to attach my objects with some device that will told to me where they are, and each of them must have an ID.
I found some DIY like that:
In my researches I also found the possibility of use bluetooth le , NRF24L01+ or RFID, but how?
Are there suggestions on how to create such system? Can someone give me a way?