In order to leave their mark on the world, people have locked bits and pieces of their lives away in journals, chests, and books. Now, you can put your information into a ring! Funded by Kickstarter, the NFC Smart Ring is a pioneer in the new wave of wearable technology. If you have one of these babies, you might as well toss away your cards and keys. It can be used to make transactions, open doors, and access smartphones. Its inventor is a huge fan of open source technology and has opened up its software for all to access and customize. It’s waterproof, and doesn’t even need to be charged!