How do you set up Chave Móvel Digital in Portugal in 2026?

Gov.pt states that foreigners can activate CMD with a passport or with a título / cartão / certificado de residência. When you use a residence document, you also need a Portuguese NIF. Activation is free. You must associate your own mobile number; shared family SIMs create later lockouts.

Without a Cartão de Cidadão, most newcomers use an in-person route: Espaço Cidadão, eligible Loja do Cidadão / IRN counters, or a Portuguese consular desk that handles foreigner CMD. Bring the identity or residence document named in the gov.pt list and the mobile number you will keep. Autenticação.gov also offers video-call and Citizen Card online paths for people who already hold those credentials.

Portuguese citizens can start online with a Citizen Card reader or, in some cases, Portal das Finanças credentials, then wait for a temporary PIN letter. Foreigner residence-document routes still lean on attended desks. Ask the attendant whether digital signature for CMD is included; some activation modes unlock login only and need a later counter visit for signature features.

After activation, choose "Chave Móvel Digital" on Autenticação.gov when a site offers gov authentication. Common mover targets are Portal das Finanças (tax notices, address certificates, invoices), Segurança Social Direta (NISS-linked services), and SNS 24 / SNS digital channels once your SNS user number exists. Banks increasingly accept CMD as a strong identity check when you open an account, but each bank still applies its own KYC list.

Keep the PIN private and the phone number reachable. If you change SIMs, update CMD contacts through Autenticação.gov before you lose SMS codes. A wrong tax address can also send recovery letters to the wrong mailbox, so align Finanças data with your real home. Place CMD after the core identifiers in paperwork after moving.