This new device developed by AlpVision will provide packaging printers and converters with a portable Quality Control device with the goal of verifying the presence of the Cryptoglyph® invisible marking. The (rechargeable) battery powered system enables testing of offset plates before printing and performance of sample testing of printed matter on the printing line. This is a more convenient device to operate in the environment of the printing press room, complementing the former Quality Control tools based on flatbed scanners already deployed.