Which companies should I contact?

—Name withheld

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Near Field Communication (NFC) microchips are used in NFC tags. NXP Semiconductors, one of the creators of the NFC air-interface protocol, is the leading provider of NFC chips. Texas Instruments, Moversa (see Moversa Debuts Universal NFC Chip), Shangai Huayuan Smart Information Technology and ST Microelectronics also make such chips.

—Mark Roberti, Founder and Editor, RFID Journal