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Goodbye bar codes

作者:满唿    发布时间:2019-03-06 04:11:13    

Invisible holograms could replace bar codes in a bid to combat product counterfeiting. Loughborough University spin-off Laser Optical Engineering says the idea is to etch holographic codes with an infrared laser directly onto the surface of products, such as computer components or CDs. Invisible to the naked eye, the code can only be read with an infrared scanner that emits the correct frequency of laser light. This means the information is contained in the product itself rather than the packaging, like bar codes. Unlike the holograms on credit cards,

 

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