Barcode
A machine-readable pattern of lines that encodes a number, patented by Woodland and Silver in 1952 and put on groceries from 1974; it gave everyday objects identifiers that machines could read.
proposed by
- Bernard Silver person 1924–1963 [src]
- Norman Joseph Woodland person 1921–2012 [src]
built upon by
- Universal Product Code standard 1973 [src]