A position on defense commonly in the defensive backfield. The strong safety plays in the middle of the field on the strong side of the formation, closer to the line of scrimmage than the free safety. The strong safety is more involved in stopping the run and guarding the tight end on passing plays. The strong safety tends to be the larger of the two safeties, and he must be a sure tackler with solid cover skills.
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.
Both engines were 4.3 Liter's, but they had different parts attached to them. Buying parts for these engines is always interesting and this digit is what makes it that way. Ninth: The ninth digit is called a check digit. It is called a check digit because the purpose of it is to check the rest of the VIN number for legitimacy. This is done by putting the VIN digits through some complex math. At the end of the equation, hopefully come out with the number that is in the 9th spot. If it comes out as something other than that, you know that the VIN Number is made up.