A small intro

As you may all know a 2015 year trend was to insert an RFID or NFC Insertable microchips under their skin programmed to unlock the door to their home, gym, or workplace, or potentially to function as their public transport pass.
The current models of microchips are not much more sophisticated than those that have been embedded in the neck of most household pets for more than two decades. The microchip is about the size of a grain of rice and usually inserted in the webbing between the thumb and forefinger using a needle the same thickness as used in body piercing.

At the moment the encryption is quite low developers are working on it to make it more robust. The microchips are only large enough to hold one access code and a small amount of other information.
So for hackers as a cold wallet it could be a great idea, but with careful from people outside you can never know who will scan your hand even if most of the people won't know it's existence.

Happy trading!