If you want to order online German sites have payment via bank transfer, . Much easier to use a real credit card if you can get one though:) 1 How to use the Sparkasse Maestro card online - Finance. Where can I get a list of ATM locations where I can use my Maestro card? Is MasterCard® SecureCode™ for Maestro easy for online shoppers to use? Your monthly payment can range from a minimum amount, set by your bank, to your. Hard to find a site on the internet accepting Maestro Cards because the requirements to validate your PIN. Online Payment Gateways and Processing Otherwise your card can be counterfeited and used in any ATM (with the cracked PIN).