When we first saw the Ringbow finger peripheral, it was a gangly prototype, tethered to an external battery -- not exactly ideal for a portable tablet accessory. The idea is to strap a D-pad to a user's finger, netting them extra control for touch-based games. Now the duo behind the device is showcasing a self-contained unit on Kickstarter, hoping to garner enough interest to send it off to production. The Bluetooth-compatible band boasts an adjustable one-s
