<P> A check digit is a form of redundancy check used for error detection on identification numbers , such as bank account numbers , which are used in an application where they will at least sometimes be input manually . It is analogous to a binary parity bit used to check for errors in computer - generated data . It consists of one or more digits computed by an algorithm from the other digits ( or letters ) in the sequence input . </P>
<P> A check digit is a form of redundancy check used for error detection on identification numbers , such as bank account numbers , which are used in an application where they will at least sometimes be input manually . It is analogous to a binary parity bit used to check for errors in computer - generated data . It consists of one or more digits computed by an algorithm from the other digits ( or letters ) in the sequence input . </P>
data entry errors that a check digit would detect
data entry errors that a check digit would detect
identification numbers , such as bank account numbers
identification numbers , such as bank account numbers