BASE mobile subscribers can now make contactless payments using their smartphone at the supermarket, when filling up their car and in restaurants using the "BASE Wallet" digital wallet – and it is just as secure as using a traditional debit or credit card. This high level of security is made possible by Giesecke & Devrient (G&D). As a partner in security, G&D supplies special SIM cards with highly secure memory for storing the digital Maestro card. Giesecke & Devrient also operates a high-security data center for E-Plus, enabling them to install the payment application on the SIM card, personalize it and manage it over its life cycle.