From A Wisconsin company will let employees use microchip implants to buy snacks and open doors – The Verge

A Wisconsin company called Three Square Market is going to offer employees implantable chips to open doors, buy snacks, log in to computers, and use office equipment like copy machines. Participating employees will have the chips, which use near field communication (NFC) technology, implanted between their thumb and forefinger.
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They’re essentially an extension of the chips you’d find in contactless smart cards or microchipped pets: passive devices that store very small amounts of information.