This guy has a lot of BTC money and got electronic chips put in his body to store his keys for his btc wallet. So if you've got a lot of BTC you need to keep safe, and are not scared of blood maybe you can use his company "Mr Bitcoin" to have one implanted.
Full article: http://www.mirror.co.uk/news/technology-science/technology/keep-your-bitcoin-stash-safe-4605530
Full article: http://www.mirror.co.uk/news/technology-science/technology/keep-your-bitcoin-stash-safe-4605530