It is a simple number known as the global unique identifier, or GUID.

The name can change but the unique identifier must remain constant.

The law requires each voter to have a unique identifier.

Or at least to keep the IP address, your unique identifier hidden from prying eyes.

The unique identifier must stay the same when a policy is replaced by a new version.

Earlier this week, programmers found that Microsoft was collecting a unique identifier during the operating-system registration.

Divorce the unique identifier from the naming convention.

They are then assigned a unique identifier.

Basically, every piece of audio creates an algorithmic representation of itself that serves as a unique identifier.

Under the new system firms would have to use a unique identifier for each ATS when reporting trades.

The forehead showed no unique identifier.

Catlett said he can set his Palm VII, for example, to warn him before it transmits his unique identifier.

Mr Sargeant said it was inevitable that users of The Depression Test on depression.org.nz, would create a unique identifier.

But I can't find a single unique identifier to unequivocally tie Morissonneau's skeleton to the one in Kessler's photo.

Another came from an office worker whose employer used the numbers as employees' unique identifier for the company health plan.

The ICC-ID is a unique identifier that's used to authenticate the SIM card in a customer's iPad to AT&T's network.