A Swedish hacker has devised a neat trick that makes him able to buy groceries or transfer money between bank accounts by just waving his hand. Patric Lanhed, a software developer at DigitasLBi, implanted a small NFC chip with the private key to his Bitcoin wallet under his skin. He just has to wave his hands against an NFC chip reader that will scan the data, and a custom software will confirm the authenticity of the key, triggering the money transfer. The duo claim that they can turn this payment transfer system into a bio-payment terminal system to be used in stores.
Source: https://thehackernews.com/2015/11/hacker-botcoin-chip.html