Q–Practically everything we buy nowadays is marked with a bar code indicating name, price and, I suspect, other information. I have been very curious about how this is handled. Is there some central ...

Bar codes affect millions of consumers every day, but few peopleknow how the ubiquitous little labels work. In supermarkets and other stores, clerks speed the checkoutprocess by scanning bar codes ...

The recent death of Alan Haberman, who chaired the industry committee that led the charge to standardize the universal product code, or UPC, symbol in 1973, shines a spotlight on just how much the ...