Bar codes have several advantages over newer RFID technology.
Bar codes are a type of sales tracking technology shown as a series of lines or other shapes. The images are read by a scanner, or their 12-digit code is entered into a computer. Another technology called radio frequency identification (RFID) is in use to a lesser degree. It transmits radio waves that provide more data storage and multi-item scans. This technology is gaining ground, but as of 2010, there are several advantages of bar code systems.
Cheaper Production
Bar codes are printed directly onto paper or plastic objects. The only cost involved in producing a bar code is extra ink; this is a negligible cost. RFID technology requires the assembly and insertion of a computerized chip, which is more costly.
Universal Technology
Bar codes are the norm for retail products across the world. Any store with a bar code reader can process product bar codes from anywhere else in the world. As of 2010, RFID technology still has two separate chips (read only and readable/writable), which cannot be read by the same machine. A product is in development that would make this possible, but it is not yet available.
Fewer Restrictions
In RFID tests, it has been found that readers have a difficult time passing through metal and liquid to pick up the information. Bar codes function with the same accuracy no matter what material they are placed on.
Tags: RFID technology, several advantages