The microchips each contain a unique number and are implanted into the loose skin between a dog's shoulder blades.
But biometric identity is a contentious issue all over the world, and the unique number has also raised a number of thorny questions.
The special Australian visa itself has a unique number, 188, making it distinct from the traditional 457 subclass given to most temporary foreign workers.
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Before voting, they could input their unique number.
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This system involves high-tech license plates which constantly transmit a vehicle's unique identification number.
Last year Europe adopted legislation requiring each pack of drugs to carry a unique serial number.
India is collecting biometric data from over one billion residents to issue them each a unique identification number.
In a trial in Tumkur near Bangalore, Indians armed with a new unique identity number are opening bank accounts electronically.
The money would be transferred to the beneficiary's bank account which would be linked to a unique identification number.
Many Web sites are set up to create a cookie, or unique serial number, on the PC of the person browsing.
Under ultraviolet light and a magnifying glass, any one of these thousands of dots can reveal the host vehicle's unique identity number.
Each watch will have a unique identifying number, and the transmissions to each watch will be encrypted to protect the user's privacy.
When the chip is hit with a radio frequency signal, it emits a unique identifier number that functions like a long, unguessable password.
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The special Australian visa has a unique identifier number "188, " making it distinct from the traditional "457" visa given to most temporary foreign workers.
The special Australian visa itself has a unique identifier number "188, " making it distinct from the traditional "457" subclass given to most temporary foreign workers.
Is India's showpiece multi-billion-dollar unique identification number (UID) programme unravelling?
Besides using a third party authenticator consistently at every game, Major League Baseball allows its fans to trace their memorabilia purchases online by using a unique ID number and hologram.
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Under the new rule, large traders will need to identify themselves to the SEC, and each trader will be a unique identification number, which will need to be provided to each broker-dealers that they use.
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If deployed, it means that a passport, for example, could be quickly scanned using the system and its laser speckles recorded and encoded in a unique serial number or onto a database before being issued.
Each voter could receive a unique personal number by mail, then have the option to download an app that allows them to read through statistics about each election candidate, even take a quiz on which one best suits their views, then vote.
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The consultation was unique in a number of respects, and has already generated a wave of positive feedback.
Microsoft can still claim one victory over Yandex in the number of unique searchers, though.
Although Aetna is not alone in its travails, it has a number of unique problems.
The traffic goal is based on the number of unique visitors who visit my blog every month.
The 33 million figure Pincus quoted may then have been the number of unique, rather than repeat, users.
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It saw the number of unique mobile visitors grow nearly 275% last quarter.
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That's not the case in the U.S., where the number of unique visitors to Facebook continued to grow in January.
They are paid, not by the piece but by formulas based on the number of unique visitors to their content.
Cricket fans visiting the Oval are in for a real treat as the ground has a number of unique features.
Scanlife, a provider of QR code services, saw the number of unique users scanning codes through its system triple in the year to March.
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