The Motorola MC70 seems to be a fairly popular barcode scanner. It's wireless and actually looks kind of like a high-tech cell phone.
"Key features include a color 1/4 VGA display, 1D Laser Scanner/2D Imager, Converged voice and data (Voice over LAN/WAN), User-accessible memory (SDIO) and Windows Mobile 5.0 OS. The MC70 is built to an industrial specification in terms of drop, temperature and sealing, giving industrial users and others in harsh operating environments the ultimate in durable connectivity." - BarcodesInc
A point of sale scanner (a till)
Input device
Input - the reader is reading the bar code and putting the information into the computer
your head
Different bar code readers can be installed using Google's Play Store. The store offers a wide range of bar code scanners such as "Bar code Scanner from ZXing Team or Google's own implementation of a qr/bar code reader : Google Goggles.
There's an app for that
bar code reader
There are several companies that make hand held bar code readers. You can even get an app for your smart phone that will read bar codes. A major manufacturer of bar code reader is Motorola (they bought "Symbol" the leading bar code reader company a while back). Look at: http://www.motorola.com/Business/US-EN/Business+Product+and+Services/Bar+Code+Scanning
Barcode Reader Because im guessing my answer
There are numerous advantages to the use of a bar code. The primary two are speed and accuracy. A bar code reader can decipher the code in just thousandths of a second and transmit it with near perfect accuracy - much better than humans can.
The bar code reader is used to read printed bar codes. It allows an attached computer to identify a product or item on which a bar code it printed and, most importantly, price that item to automate and speed checkout in a store or market.
A)mouseB)Barcode readerC)Optical Mark readerD) Printer
My name is randy what is your name