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# == CreditCardValidations Mmi
#
# Implements Major Industry Identifier (MII) detection
#
# The first digit of a credit card number is the Major Industry Identifier (MII), which represents the category of entity which issued the card. MII digits represent the following issuer categories:
# 0 – ISO/TC 68 and other future industry assignments
# 1 – Airlines
# 2 – Airlines and other future industry assignments
# 3 – Travel and entertainment and banking/financial
# 4 – Banking and financial
# 5 – Banking and financial
# 6 – Merchandising and banking/financial
# 7 – Petroleum and other future industry assignments
# 8 – Healthcare, telecommunications and other future industry assignments
# 9 – National assignment
# For example, American Express, Diner's Club, Carte Blanche,
# and JCB are in the travel and entertainment category;
# VISA, MasterCard, and Discover are in the banking and financial category (Discover being in the Merchandising and banking/financial category);
# and Sun Oil and Exxon are in the petroleum category.
module CreditCardValidations
module Mmi
ISSUER_CATEGORIES = {
'0' => 'ISO/TC 68 nd other industry assignments',
'1' => 'Airlines',
'2' => 'Airlines and other industry assignments',
'3' => 'Travel and entertainment and banking/financial',
'4' => 'Banking and financial',
'5' => 'Banking and financial',
'6' => 'Merchandising and banking/financial',
'7' => 'Petroleum and other industry assignments',
'8' => 'Healthcare, telecommunications and other industry assignments',
'9' => 'National assignment'
}
def issuer_category
ISSUER_CATEGORIES[@number.to_s[0]]
end
end
end
Version data entries
21 entries across 21 versions & 2 rubygems