Uses for 2-d bar codes
Most 2-D bar codes appear in magazine or newspaper advertisements. When scanned, most provide information about items in the advertisement. However, 2-D bar codes can be put almost anywhere, and they can be used for more than advertising. Giant bar codes on highway billboards give directions to rest stops. Smaller ones on the backs of stadium seats can show a team’s schedule of games. A hardware store might attach a 2-D bar code to the tools it sells. Customers who buy a tool can watch a video on their smartphone screens to learn how to use the tool. A 2-D bar code might appear on a FOR RENT sign placed in the window of an empty apartment. Scanning the bar code will give people information about the apartment, such as the monthly rental fee. Modern technology has provided us with an amazing tool.