Barcodes
99% Invisible
00:00
The Mystery of QR Codes
Roxanne Jones: Barcodes used to be a combination of bars and stripes. She says two-dimensional barcodes, which look like crossword puzzles, have emerged. Jones: Most popular are QR codes, quick response, that are scanned by cellphones. "There's something about them that I find kind of lame or annoying," she says.
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