The chips, which are only about as small as a grain of rice, are designed to hold entry keys, credit card information, access to vending machines and printers, and technology to collect train fair while the passenger is already on-board.
Ulrika Celsing is one of 3,000 Swedes with a chip implanted in her hand — a process known as “biohacking.” As the 28-year-old told AFP, “It was fun to try something new and to see what one could use it for to make life easier in the future.
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