A new tamper-proof tagging system could make it more difficult to sell
counterfeit goods. The tiny strip of magnets can be inserted directly into the
product on the factory floor and read through its packaging. Measuring just one
square millimetre and less than one micrometre thick, they can store
information, such as batch number and origin, through the presence or absence of
a magnet. The makers, Flying Null of Cambridge, say that the batch numbers would
tell retailers whether their designer goods were authentic.
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