Summary | Credit-card numbers, International Standard Book
Numbers, bank routing numbers, Universal Product Codes, Cusip
numbers used to identify financial instruments, plus many other
items all include a calculated "check digit” that allows the
numbers to be automatically validated by a computer.
Numbers, bank routing numbers, Universal Product Codes, Cusip
numbers used to identify financial instruments, plus many other
items all include a calculated "check digit” that allows the
numbers to be automatically validated by a computer.
blogs.wsj.com | 04 December 2015