touchback - (American football) a play in which the opposing team has kicked the football into your end zone.
From Wikipedia, the free encyclopedia. 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.
Confidence votes 1.0K. Your bank's Routing Transit Number (RTN) is the first nine digits of the number along the bottom left section of your checks. It will be in between two colons with a horizontal dash next to it. This is followed by your checking account number, and lastly the check number.