Mobile Payment is a macropayment solution where payments can be performed with a yet higher level of security with the cooperation of a financial institution. Clients can pay at contracted merchants debiting their own bank account without a top limit. Thanks to Cellum’s cryptography and the applied special system architecture, transaction security is on a higher level as compared to credit card payments. With the introduction of Cellum’s Mobile Payment Solution all limits disappear that previously hampered mobile phones to be used as payment media when making purchases.