I found it disappointing that the implants were largely security keys of one kind or another. One could put that in an earring or wristband. Under the skin off

I found it disappointing that the implants were largely security keys of one kind or another. One could put that in an earring or wristband. Under the skin offers very little advantage. I was hoping for implants that enhanced the body in some way, helped treat an illness, or that it would look cool at least.