Firstly, you can according frequency to choice, LF(125-134 KHz) HF(13.56MHz) UHF(860-960Mhz).
Secondly, you can according Reading Distance to choice, LF, HF chip reading distance about 2-5cm, UHF chip reading distance about 1-10m.
If you don' t know how to choose chip, pls feel free to contact us, we can give best suggestion.