Something for your game setting?

[Spinward Scout]

Digital tattoos. Too invasive and permanent for me. Which is one of the reasons I don't have regular tattoos.

A Wearable, Embedded Tattoo Concept, Designed to Make Life Easier

http://www.psfk.com/2014/11/fitbit-wearables-tattoos-embedded-design.html

 

[Kilgs]

SLA Industries, a sci-fi game, had DNA tattoos also. They were inheritable ;-)

 

[zellak]

Nice idea,

Can think of a few games i will use that... Cheers !

 

[Patron Zero]

I must be old school, more a branding-scarification person myself.