Is that your ring phoning?
In the image, the screen looks glued on, but I guess that it could easily be a small piece of epaper. As for being an ear-piece, I can't see how it would end up large enough to be comfortable or practical, yet still start off small enough to wear as a ring.It might look like nothing more than a ring at first glance, but this finger-worn device can sync with your mobile phone. It has a vibratory alert and a tiny screen that shows caller ID, text messages, and meeting reminders from your mobile. Flip it open and it converts into a headset.
Now, if the some idea was expanded to a bangle, then an entire phone could be built into a bracelet small and slim enough to be discrete.
Now the embarrassing bit: I got this story off MSN...