Transfer of Power to Contact-Less Smart Cards with Light from the Reader

Patent Status: 

Patent Filed

Indian Patent Applicaton No: 



The energy for the RF contactless smartcard reader is provided by an optical source in the reader.

Key Features: 

  • The optical source on the reader activated by bringing the smart card near it.
  • Optical source from reader will transfer power to the photovoltaic chips on the smart card during smart card usage such as identity verification, registering usage, activating sensors and the like.


  • RF power may be limited to only communication applications and not for computation within the smart card.
  • With higher power availability from the optical source, more sophisticated functionality may be built into the smart card.
  • The contact-less transfer of power makes the smart card operation more robust.


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