9. The method of claim 8 , wherein said body portion comprises (a) a number having a string length of (Y−1) characters, and (b) a single check digit calculated according to a validation routine.
9. The method of claim 8 , wherein said body portion comprises (a) a number having a string length of (Y−1) characters, and (b) a single check digit calculated according to a validation routine. 12. The method of claim 9 , wherein said number having a string length of (Y−1) characters is a random number or a sequence number.