If you didn't make it to the very end, he finds out from his bank right after the implant that the PayTag will no longer be supported in 3 years! What an unfortunate turn of events!
This is quite expected. If the subdermal installation was so quick, so should be the removal, too.
What is really sad that the card (and so the implant) can be compromised any moment because CC data sometimes get stolen, and banks cancel and replace a card even on mere suspicion that it could have happened. So it could as well be arbitrarily shorter than 3 years.
I understand the cool factor, but, to my mind, it's not not great from the systems-building angle. Usually you want more modularity and easier modification or replacement of any part, not more of a monolith.
Looks like this was some sort of proxy card, which is just associated with the actual card, so it shouldn’t need to be physically changed if the parent card is compromised.
