Meet the Tiny Bitcoin Wallet that Lives Under Your Skin

A bitcoin entrepreneur and ‘biohacking’ enthusiast has found an unlikely place to store digital currency – under his skin.
Martijn Wismeijer, also known as ‘Mr Bitcoin’, had two NFC (near-field communication) chips injected into the back of his hands during a biohacking event organised by Permanent Beta last week.
Speaking to CoinDesk, Wismeijer said he has so far experimented with storing litecoin, darkcoin, dogecoin and bitcoin on the tiny devices, which can hold up to 888 bytes of data each.
‘As long as you can export your private key, you can write that into your hands,’ he added.
Although these tests have proved successful, Wismeijer will not be using the implants as a long-term offline store for his cryptocurrency. This is because the media coverage he has received is likely to compromise their security, he said.
However, Wismeijer stressed that the chips are a viable, stealthy storage option for users who are a little more camera-shy:
‘If you are a bit more discrete about your implant, nobody will ever know it’s there. Apparently the chips don’t show up in a full-body scanner at airports … totally secret agent style, available to consumers everywhere.’