Encoding means,

The process of printing or writing MICR characters on checks, deposits and other financial instruments. [Magnetic Ink Character Recognition (MICR) is a feature identification technology used primarily by the banking industry to facilitate check processing. Each check is coded down with the dollar amount of the check. If you enter this information incorrectly, a coding error occurs.]

Synonyms of Encoding

cryptograph , cipher , put into code , conceal , make secret