She contacted police, who traced Wooles via his IP address - the unique numeric label attached to his computer - and arrested him at his halls of residence in Leeds.

BBC: Facebook blackmailer William Wooles spared jail

In 2002, GE innovated a portable, easy-to-use, ultra-low-cost ultrasound scanner that was able to address the unique market needs in China.

FORBES: Reverse Innovation and the Myth of Cannibalization

If he could start over, Cerf added, he would have built a protocol that allowed "multi-homing, " giving each user a unique IP address.

FORBES: Made For Hacking

This is the address for fashion insiders seeking unique pieces with serious cachet, where well-coiffed grand dames drop off their unwanted pieces for sale and stylists seek out clothes for glossy magazine fashion shoots.

BBC: Vintage fashion in Paris

Mr Clegg said he would be willing to accept changes to take account of new technology - such as ensuring each mobile device had its own unique IP address.

BBC: A person using a computer