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Continue to ChatApple invents digital device handshake using next-gen cameras and invisible inks https://macdailynews.com/2011/12/01/apple-invents-digital-device-handshake-using-next-gen-cameras-and-invisible-inks/
Apple invents digital device handshake using next-gen cameras and invisible inks https://macdailynews.com/2011/12/01/apple-invents-digital-device-handshake-using-next-gen-cameras-and-invisible-inks/