The guys at Neuland Innovation Ltd. have a nifty new product looking for backing on Kickstarter called the KEEO Carbon. After a number of iterations the team landed on a this design for a innovative way to keep your keys with you, along with some handy features.
The KEEO carbon can hold up to three house-type keys internally, and has a loop to keep others tethered. It also features a USB stick, bottle opener and a light possibly down the road all designed for one-handed use. Probably one of the most impressive features however is the Bluetooth connectivity to an app on your smartphone, alerting you when the device and your phone become too far apart.
A $77 USD pledge can get you into the Basic model, but you might want to be quick as they have already exceeded their goal on this one and some of the backer rewards are already gone. See more about it in the video below: