Cash, Card, or Body Chip?

• Position: TECH

Is it the ultimate in convenience, or a terrifying glimpse into the future? Three Sguare Market (32M), a Wisconsin company, has become the first business in the U.S. to implant microchips into its employees' bodies. The rice-sized chips, called RFIDs (Radio Frequency Identification), are inserted under the skin of the hand. Employees who get the optional implants can enter the building, buy from the company's cafeteria, and use machinery with a wave of the hand, eliminating the need for ID cards or money. 32M's CEO thinks people will eventually use RFID chips to pay for everything from groceries to...