FeliCa
FeliCa (short for Felicity Card ) is a contactless RFID smart card system that was developed by Sony and is mainly used for payment systems, including the Octopus card in Hong Kong .
technology
The FeliCa transponder technology is a passive transponder based on 13 MHz. Passive means that the card gets the energy it needs for processing from the reader and does not contain an internal battery source.