The 'FontCode' System Can Hide Messages Inside Unrelated Text

A team of computer science experts working out of Columbia University have managed to develop a high-tech font system that is designed to make it possible for messages to be hidden inside text in a way that makes them impossible to detect with the naked eye.

The FontCode system works by making extremely minuscule and subtle changes to characters within a block of texts, such as manipulating the angles of their curves or the lengths of their stems, with each group of changes corresponding to a specific alphabet in the hidden message. Because the alphabet changes are so subtle, they can't be detected by the naked eye, but can only be spotted by computers enabled with FontCode themselves.

While this font system sounds like something out of a spy movie, it also offers a range of applications in copyright protection as well as retail, by allowing for the embedding of metadata such as QR codes.