It is not in a drawer or on a piece of paper. The key is your phone number and the PIN you chose when you activated it. You always carry it with you.
Number + PIN = your key
Dona Rosa searches the drawer for her key — and Zé shows where it really is. Tap 🔊 for sound. Animation created with AI.
On the site you want to enter, tap Autenticar and pick the Chave Móvel Digital tab (not Cartão de Cidadão).
Type your mobile number and your PIN (4 to 8 digits). Tap Autorizar.
A code arrives by SMS (or shows up in the gov.pt app). Type it and confirm. You are in.
In the official gov.pt app the code appears right on your phone, no waiting for SMS — or log in with your face or fingerprint. You can also sign PDFs and keep your documents there.
gov.pt app — official pageA friend activated the key at the counter. A week later he wrote: “Where is it now? And I don't remember the PIN.” The answer was on the confirmation sheet he got that day — the PIN was written there.
Print a sheet with the 3 steps, the number and the PIN — or write it all on the sheet you got when the key was activated. Keep it at home, never next to the phone or in your wallet.
Independent guide, not an official government service. Built from the official gov.pt and autenticacao.gov.pt pages, November 2026. The drawn screens are diagrams, not copies.
Forgot the PIN? 1) check this sheet; 2) new key in the gov.pt app or at a Loja do Cidadão.
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