METHOD FOR PREVENTING UNINTENDED CONTACTLESS INTERACTION WHEN PERFORMING CONTACT INTERACTION

摘要

A system and method for enabling a dual interface smart card reader to be able to determine if data should be read from a smart card using wireless technology or touch technology, even when the data can be accessed through wireless technology.

主权项

1. A system for determining if direct contact or contactless communication is to be performed with a smart card, said system comprised of:
a smart card including a near field communication antenna for contactless communication, electrical traces for direct contact communication and an integrated circuit memory; a smart card reader including a near field communication antenna for contactless communication and a direct contact reader for direct contact communication; a touch sensor capacitance circuit for detecting changes in charge; and at least one capacitance electrode coupled to the touch sensor capacitance circuit and disposed on the smart card reader.