In Portugal every debit card can be used through the MBWay service, with one-use cards that look like the credit counterpart to the physical one (Maestro -> Mastercard, Visa Electron -> Visa), but can be single use (with a per-card limit) or multi-use (with a limite and an expiration date), locked to the first purchase's merchant.

It also allows instant wire transfers between accounts in different banks using a phone number, and to withdraw cash at virtually any national ATM.