Consumers who like to use platinum credit cards can now have a platinum debit card to match. Bankwest launched the first platinum MasterCard debit card in Australia yesterday.There is no annual fee for the premium card, but cardholders must deposit $4000 a month into their transaction account (or be subject to account fees).Benefits include MasterCard's 24/7 Platinum Concierge Service, 12-month extended warranty on purchases and worldwide purchase security protection.The card also provides access to MasterCard's "Priceless Sydney" program, which includes exclusive hotel, dining, retail and sporting event offers.Mike Ebstein, the principal of MWE Consulting, said the debit card market had reached a point of maturity where it made sense for financial institutions to start segmenting the market.Ebstein said that without a loyalty program and points the benefits package was not a knockout proposition. However, the package would have some appeal and there was a group of consumers who liked platinum cards.