Morse code is used in telecommunication; it is a method of transmitting and receiving coded information. Each character (letter or numeral) is coded/represented by a unique sequence of dots and dashes ...

QR codes–square, dot-matrix variants of the venerable UPC–are becoming an increasingly popular way to share information such as URLs, contact details, GPS coordinates, and calendar events. The idea is ...

Here is underworld code #4 for the Wired Underworld issue's Ring of Dishonor. The codes are all secret languages used by people living below the law in various periods in history. Further codes will ...