The shape is more user-friendly giving a comfortable touch when user enjoys the convenience from RFID technology.
In IC options, Thumb Keyfob can go with LF (125KHz) such as EM or Atmel, and HF (13.56MHz) such as Mifare / Legic / I-Code SLI.
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Recommendable Application: Access Conrol / Time and Attentance / Cashless Payment / Club Member ID...etc.
