New technique for document fingerprinting can cheaply detect forgery

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Although some official documents can be converted to a digital form, it is impossible to do away with paper altogether – and up to now it has proven complicated and expensive to protect such official paper documents from forgery. One method is to embed an RFID chip into the document, although tamper-proof RFID chips have proven to be too expensive for everyday use. Now, a team of researchers at Newcastle University have devised a cheap and easy-to-use method for preventing forgery of paper documents by using an ordinary camera to create a unique digital fingerprint of the document. The researchers…

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