Cl@ve

Why carry a physical government ID when your digital identity can fit in your pocket?

Cl@ve is the official digital identity platform developed by the Agencia Tributaria (Spanish Tax Agency) that transforms how citizens interact with over 50 public administration services. This tool eliminates the need for physical certificates, card readers, or remembering dozens of passwords across different government portals. Designed primarily for Spanish residents and citizens, Cl@ve consolidates authentication into a single, secure system accessible directly from your mobile device. The app addresses a fundamental problem: the friction of verifying identity when filing taxes, checking social security status, requesting official documents, or accessing local council services. Instead of navigating multiple authentication methods—each with its own password and security protocol—Cl@ve offers a unified gateway based on either SMS codes, PIN numbers, or biometric verification. The core value proposition is straightforward: reduce administrative overhead while maintaining compliance with European eIDAS security standards. For anyone who regularly deals with Spanish bureaucracy, this tool effectively removes the most common barrier—proving who you are—in under 30 seconds.

Core authentication mechanics and functional architecture

The app operates through three distinct verification modes, each optimized for different security levels and user preferences. The first method, Cl@ve PIN, generates a temporary numeric code valid for 10 minutes, designed for quick transactions like checking tax status or booking appointments. The second method, Cl@ve Permanente, creates a persistent password that works across sessions, suitable for recurring administrative tasks. The third and most advanced method uses biometric authentication—fingerprint or facial recognition—directly on your device, bypassing the need for any code entry. All three methods connect to the Agencia Tributaria's secure backend, which validates your identity against the national database without transmitting sensitive personal data over the network. The app also includes a built-in QR code scanner that reads dynamic codes displayed on government websites, automatically triggering the authentication flow. For users who prefer traditional methods, the app supports integration with electronic DNI (DNIe) and digital certificates stored on the device. Each authentication event generates a timestamped log visible within the app, allowing users to audit their access history. The offline capability is limited—the app requires an active internet connection to communicate with authentication servers—but it does cache your registered devices for faster future logins.

Key advantages over traditional authentication methods

• Multi-factor security without hardware dependency – Uses SMS codes, PINs, and biometrics as alternatives to physical card readers or external token generators, reducing setup complexity.
• Unified access to 50+ government services – Single authentication for Tax Agency, Social Security, Traffic Authority, and local councils, eliminating separate account management.
• Real-time session control and activity logging – View every authentication attempt with timestamps and device identifiers, providing full transparency over account access.

Download mobile app now

Claim your streamlined access to Spanish public services—install Cl@ve today and eliminate password fatigue across government portals.

Technical disclaimer: This application requires an active internet connection (Wi-Fi or mobile data) to authenticate with government servers and may incur data charges according to your mobile plan. The app is intended for users aged 18 and older with a valid Spanish NIF/NIE and registered mobile number. In-app purchases are not available, but some premium administrative services accessed through the app may carry separate government fees. The developer, Agencia Tributaria, processes personal data in accordance with GDPR and Spanish data protection laws. Compatibility requires Android 8.0 or higher with Google Play Services enabled for biometric authentication features.