Re: the good old days
Mum got one of those videos that you could program with a barcode scanner
You think that was pointless? My Laserdisc player has two remote controls, one is sized and shaped like a facing brick and uses infra red or can be connected to the player with a 3.5mm lead. The other, sleeker, one has an IR transmitter at one end and a barcode scanner at the other. A sheet of barcodes, totally pointlessly, allowed you to scan the code for "play" or "stop" or "next track" and then transmit it to the player.