This tool adds a check-digit to an entered number. This algorithm is used in banking and for IMEI numbers, National Provider Identifier numbers in the USA, or Canadian Social Insurance Numbers.
This check-digit calculator adds a check-digit to a number based on the luhn check-digit algorithm. Enter your number without the check digit in the top field and it will be added in the field below.
Cryptomathic is one of the world's leading providers of security solutions to businesses across a wide range of industry sectors including finance, smart card, digital rights management and government. Cryptomathic provides cryptographic solutions for Authentication & Signing, EMV, CA-Compliance, Key Management, Public Key Infrastructure and ID Issuing.