The first modern barcode was scanned 50 years ago this summer—on a 10-pack of chewing gum in a grocery store in Troy, Ohio. Fifty is ancient for most technologies, but barcodes are still going strong.
Scientists have discovered a harmless, inexpensive way to track Zebras in the wild: snap pictures of their strips and ID them like UPC product codes. Tracking animals over time is essential to ...
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