bar code

A small pattern of vertical lines that can be read by a laser or an optical scanner. In records management and electronic discovery, bar codes are often affixed to specific records for indexing, tracking and retrieval purposes.

A predetermined pattern of vertical lines that, when read by an optical reader, can be converted to machine-readable language See also radio frequency identification (RFID).

A code representing characters by sets of parallel bars of varying thickness and separation that are read optically by transverse scanning. Note: Bar code uses include identifying merchandise, sorting mail, and inventorying supplies.