MICR
full spelling ： Magnetic Ink Character Reader
The MICR device can be considered as a special type of scanner. MICR devices were developed in the late 1950s, mainly to assist the banking industry. These devices assist the automation of the processing of input cards and paper documents. These cards and paper documents are written with a magnetic ink. This magnetic ink contains iron oxide particles in it. The characters have a standard configuration. This makes them recognizable to humans and at the same time provides signals, produced by the read head. The signals are analyzed to identify the characters used and then these are transmitted to the memory.