I have lost my transit card in my bag enough times that more than one I’ve just rubbed my bag against the card reader and hoped for the best. It sounds like they ran into the same problem, and came up with a pretty nifty solution.
Two MIT students with a passion for jewelry and hacking did the impossible: They built a ring that doubles as a subway farecard and got legal clearance to use it on the Boston T.
Edward Tiong and Olivia Seow’s 3-D printed Sesame Ring features an embedded RFID chip compatible with the Boston MBTA’s CharlieCard (a rechargeable farecard similar to existing ones on the Washington D.C. Metro, the New York/New Jersey PATH, and the San Francisco/Oakland BART). Instead of fishing a farecard out of a wallet, pocket, or bag, a user simply swipes their ring at a turnstile and refills it either online or at a vending machine.
- Open Sesame: A Jewelry Replacement For Subway Farecards (fastcodesign.com)
- Brilliant Gadget of the Day: A Stylish Ring To Replace the Transit Farecard (theatlanticcities.com)
- Forget Your Farecard and Use One of These Hip RFID Rings Instead (gizmodo.com)
- MIT Students Design ‘Sesame Ring’ to Replace Boston Transit Cards (mashable.com)
- Mass Transit Powers… Activate! This Ring Could Replace Your Subway and Bus Pass (techland.time.com)