About 6,000 Swedes have replaced carrying keys, train tickets, and ID Cards for the convenience of a microchip. Now vaccine passports can be added to that list because personal medical data can be stored in the microchip. It is a transition that many call the Internet of Bodies, which is medical implants that go inside your body and link with the internet. According to The Atlantic, it’s a health tool that is predicted to “become so useful they’re hard to refuse.”