I went to Dustin at Enso to get the first VivoKey Spark implanted. Sadly I cannot recommend him, he did a really bad job at implanting my tag in the back of my hand.
He approached it at a weird angle, didn’t push the plunger all the way down (so the tag was still stuck in the needle), went to pull it out, got half way out before realizing it was still in the needle, jammed the needle back into my hand, and using his fingers, physically wiggled the implant out of the needle into my hand through the skin. He also nicked a vein and I bled like crazy, bruising was the size of my entire back of hand.
You can watch and see the installation here - https://vimeo.com/305802970 (warning bloody and grahic)
It was not a good experience at all. I have 5 implants, 4 of which were done by @c00p3r_atx , who runs Dangerous Minds podcast and is the king of implants; I wouldn’t let anyone else stab me. This Spark installation almost made me pass out, it was so bad, especially compared to the rest.