High Quality Content by WIKIPEDIA articles! MIFARE is the NXP Semiconductors-owned trademark of a series of chips widely used in contactless smart cards and proximity cards. According to the producers, billions of smart card chips and many millions of reader modules have been sold. The technology is owned by NXP Semiconductors (spin off from Philips Electronics in 2006) with its headquarters in Eindhoven, the Netherlands, and main business sites in Nijmegen, the Netherlands, and Hamburg, Germany.