Norman Joseph Woodland, who died on Sunday at the age of 91, invented something that was used five billion times today alone. In fact, you probably have one (or lots) within arm's reach right now: the bar code.
All of us are used to QR codes and scanning things with our phones to get information, but spare a thought for the humble bar code. Sixty years ago it started the tracking and identification revolution and it's with these seemly random bars that still cover everything that a lot our new technology has evolved.