In addition a ring of IR light emitting diodes (LEDs) are used to illuminate the hand and determine the position of the user's fingertips.

BBC: Digits demo screenshot

On the middle finger of his right hand he wore a ring with an oblong piece of faceted green glass that caught the light.

NEWYORKER: Election, Monitored

The discovery eventually came about using the Large Hadron Collider (LHC), a machine at CERN that sends bunches of protons round a ring 27km in circumference, in opposite directions, at close to the speed of light, so that they collide head on.

ECONOMIST: The Higgs boson

Antonio Tarver, the now dethroned undisputed light-heavyweight champion, unleashed a low blow on the tussle of the old-timers for The Ring Magazine light-heavyweight belt on Saturday.

BBC: Calzaghe hits back at the critics

Imagine that you have five million dollars to invest and you are considering two options: one is to build a light industrial facility in an inner ring suburb and the other is a set of bonds.

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