Show HN: Dial-A-UPC – A barcode telephone directory servicehttps://blog.semantics3.com/introducing-semantics3s-dial-a-upc-the-world-s-first-barcode-telephone-directory-service-63b60a6a41c8 by netvarun • 9 years ago 17 1 9 years agoBLblog.semantics3.com