Nimb ~ Panic-Button Smartring Kickin Now...

Nimb is a panic-button built-in to a smartring with location-ID and sensible settings which is Kickstarting now...

The Nod ~ One Ring to Control Them All...

Andy Boxall at DigitalTrends spots the Nod, a ring which turns your finger into a high-tech magic wand...

"Essentially a clever, wearable universal controller, which will interact with many mobile devices running Android or iOS, Windows or Mac computers, the Nest thermostat, TV, and even connected lightbulbs. To make things work, use gestures."

Fin ~ Ring Enabling Palm & Gestural Interface!

Check out the Fin finger frob that's Indy'd...

"Fin is a tiny hardware product that you can wear on the thumb of your hand as a ring and it will make your whole palm as a gesture interface."

Smarty Ring ~ Finger Control of Mobile Apps!

Thanks to DM's Victoria Woolaston for spotting the Smarty Ring, a...

"...stainless steel gadget [which] connects to smartphones via Bluetooth using a dedicated app. Its LED screen lights up each time the wearer gets an email, text message, Facebook and Twitter notifications and phone calls, and the ring can also be used as a remote control."

(Seems too good to be true. I hope this is not merely "design & visualization" exercise and they've actually figured out power management, etc.)

Mycestro ~ Wearable Index-Finger Mouse/Pad...

Mycestro is finger-mouse PC/AR controller. They're Kickstarting!...

"Mycestro is a 3D mouse that fits on the index finger and allows you to control your computer with hand gestures and mouse functions."