Nevertheless, I want to know your opinion about this, since it would be pretty cool to have such a system to help spread mass adoption of the cryptocurrency.

No, it wouldn't. Sounds a lot like Revelation, referring to the Anti-Christ's mark.
"And he causes all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads: and that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name"
If any man worship the beast and his image, and receive his mark
the same shall drink of the wine of the wrath of God
Thanks. I've been waiting for some christian fear monger to post that.