Unhappy with the limitations of barcodes, Masahiro Hara was inspired to create QR codes while playing go, a Japanese board game where players take turns placing white and black stones on a grid.

BRITANNICA.COM

Why Do You Have to Turn Off Electronic Devices on an Airplane?

Mobile telephones, tablets, portable video game units, and other electronic devices are ubiquitous 21st-century time killers. We can play games on them, communicate with family and friends on them, and browse the Internet on them. One would think that they would come in very handy to pass the time