2025-05-01 00:00:00 The straightforward wallet app. With Heidi Wallet, you can store your digital IDs and credentials securely and present them easily. Privacy by Design - The data of the digital credentials are encrypted and stored locally on the smartphone. You have full control over your data and decide yourself with whom you want to share which data. The current version supports the Public Sandbox Trust Infrastructure of the Federal Office of Information Technology, Systems and Telecommunication (FOITT).