chave móvel digital

Published 4 November 2026, 00:38

Chave Móvel Digital (CMD)

The state's digital key, CMD for short. It lets you log in to government websites and sign documents using your phone number, a PIN and a code sent by text message. Foreigners can activate it with a passport or título de residência; you need a NIF and a Portuguese mobile number. It can be done at a Loja do Cidadão or Espaço Cidadão, at a Portuguese consulate abroad or through the gov.pt app.

Where you come across it. booking a doctor's appointment, the Finanças portal, Segurança Social, submitting documents online, signing contracts.

The key is valid for exactly as long as the document it is linked to. If you renew the document before the key expires, you do not need a new key: its validity is extended automatically.

Official website: autenticacao.gov.pt/cmd-pedido-chave

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