MIT students Edward Tiong and Olivia Seow were tired of missing the bus because they couldn't find their bus pass (or, "Charlie Card" as it's called their hometown). As a result, they got together and invented the latest in transportation-enabled wearable technology: the Sesame Ring. The rings are 3D printed and contain an RFID chip that works the same way the Charlie Cards do. A quick fist bump and you're on your way, no more searching through your bag or your wallet while the people behind you make faces and tap their feet.

"To use the ring, all you have to do is add value at a station kiosk and punch the card target in the center to enter. The ring stays on your finger throughout your ride, so there's no hassle. And if you're worried about how the colder and wetter seasons will affect your commute (and fingers), there's no need! The Sesame Ring is waterproof and can be attached to a keychain easily, for those that aren't up for fist bumps," the duo wrote.

The students put their Sesame Ring project on Kickstarter and almost quadrupled the goal of $5,000. If you missed out don't worry. Once their Kickstarter orders are fulfilled the team plans to sell the Sesame Rings via their website, Ring Theory. Eventually they hope to expand the project worldwide, but at the moment the rings only work within the Massachusetts Bay Area. You can take a look at a video demonstration of the project here: