Does anyone know if there is a long range RFID sensor available or something I could convert to do long range?
I'm looking into an idea for tracking animals. I'm thinking if I can get a long range RFID reader, I can get a general direction. Once the signal is strong enough, switch to a medium range reader, then a short range reader. The idea being that I can get at least relatively close to the area the animal would be. I don't know much about RFID yet, however.
If RFID won't work, does anyone have any suggestions of what might work?
Looking at http://www.parallax.com/product/28140
looks like this won't be strong enough to detect an animals RFID.