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How to activate Digital Mobile Key (CMD) to sign your contract

Digital Mobile Key is the official digital signature of the Portuguese State. With it, you can sign your easypay contract securely, anytime and anywhere: without printing, without travel, without delays.

What you need before you start

- Valid Citizen Card or Portuguese Passport

- Active Portuguese mobile phone number

- Internet access

Step 1 — Access the CMD creation portal

Go to autenticacao.gov.pt and click "Get Digital Mobile Key".

You can also do it in person at a Citizen Card counter (Citizen Shops, IRN, etc.) if you prefer.

Step 2 — Enter your details

Fill in the requested fields:

- NIF (Tax Identification Number) Citizen Card number (or Passport) Document validity date Mobile phone number where you will receive SMS codes

- Click "Continue".

Step 3 — Validate the mobile phone number

You will receive an SMS code on the number provided. Enter this code on the portal to confirm that the number is yours.

If you don't receive the SMS within 2–3 minutes, verify that the number is correct and click "Resend code".

Step 4 — Set your PIN

Choose a 4-digit PIN that you will use whenever you sign documents with the CMD. Keep it in a safe place — do not share it with anyone.

Confirm the PIN and click "Confirm".

Step 5 — Activation complete

Your Digital Mobile Key is active. You will receive an SMS confirmation.

 

How to sign the easypay contract with the CMD

After receiving the easypay contract link:

  1. Open the link and click "Sign with Digital Mobile Key"
  2. Enter your mobile phone number and CMD PIN
  3. You will receive a confirmation code via SMS
  4. Enter the code and confirm the signature

The contract is signed immediately and the approval process for your account advances automatically.

Frequently asked questions

I can't create the CMD online

The portal may not be able to validate your information automatically. In that case, visit a Citizen Shop with your Citizen Card to activate the CMD in person: the process takes about 5 minutes.

I forgot my PIN

Go to autenticacao.gov.pt, log in and select "Recover PIN". You will receive a new code via SMS to reset your PIN.

Mobile phone number changed

Access the portal and update the number, or visit a customer service counter in person.