DID you know your five dollar note has a hidden code that prevents certain tasks? This is only one example of clandestine messages tucked away in plain sight. Even if you somehow manage to escape ...

Authorities worldwide can track down counterfeiters with a hidden feature in color laser printers. Every print contains a hidden code containing information about the printer it was printed on. It’s ...

HP Pavilions ship with a serial number used to identify each unit. Unlike the product name and number, which apply to a specific group of units, the serial number is unique to each computer. Business ...

One of the peripherals of most desire for a microcomputer-obsessed youth in the 1980s was a printer, probably a dot-matrix device. In the decades since, printers have passed into being almost a piece ...