Like many ambitious restaurants around town, the newly opened Pastore leaves no detail unturned: Customers are handed cold towels that chill in a fridge set precisely at 40 degrees, white tablecloths ...

A set of QR tags that businesses attach to posters, ads and demo models for promotion. Users with smartphones scan the tags for more information. Like any barcode, QR codes are customized for a ...

When 29-year-old manufacturing worker Michael Hellesen sees a Quick Response code around his hometown of Racine, Wis., he sometimes scans it using an application he downloaded to his Google Android ...