Workers offered the chance to be microchipped

Three Square Market is offering to implant the tiny radio-frequency identification (RFID) chip into workers' hands for free. Three Square Market's Patrick McMullan believes everyone will soon be wanting their own microchip.

(Picture: microchip implanted in hand opens a door lock at a press preview of the 2017 Wear-it festival in Berlin. Credit: ADAM BERRY/AFP/Getty Images)