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Sand based anti-counterfeiting system

04.02.2018

Scientists at the University of Copenhagen have developed a new sand labeling system that they say could put an end to counterfeit goods.

The optical authentication system is based on ordinary sand with impurities of three rare earth lanthanides (metal substances) - europium, terbium and dysprosium - which glow when exposed to different wavelengths.

A small piece of sticky tape is lowered into a container of sand, and thousands of grains of sand stuck to it form a unique pattern. This pattern can then be applied to metal, glass or leather.

Then the label is photographed under the influence of different wavelengths and three images with particles of europium, terbium and dysprosium are superimposed one on the other. Further, this information is digitized and stored in the manufacturer's database. A special device and a digital key are used to verify the product.

According to the calculations of the developers, the encoding capacity of the system is 6x10 to the 104th power, which eliminates the possibility of forgery.

The cost of applying one label will be about one Danish krone. Now scientists are testing technologies for scanning such "fingerprints".

Such a system could become available as early as next year.

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Connection to a PC is via the Serial ATA 3.0 interface, which provides a throughput of up to 6 Gb / s. The spindle speed is 7200 rpm.

The hard drive implements StableTrac technology. It provides for fixing the motor shaft at both ends, which reduces the influence of external vibration and stabilizes the rotation of the platters, which in turn contributes to the accurate positioning of the head block during read and write operations.

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