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 ...

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 ...

While efforts in Europe focused on Enigma, the outcome of the Pacific War hinged on intercepting and breaking Japanese naval ciphers—most notably the code known as JN-25. This code was a two-step ...

Unless your job involves working with building codes, they’re probably not something you encounter or think about on a regular basis. Though we may refer to a questionable electrical setup in an ...