You can create Digital Mobile Key (CMD) to authenticate to various public and private websites. Uses a password or PIN ("personal identification numbers”) defined by you. It also associates your mobile phone, to confirm the correct use of the digital key, through a security code that is sent by SMS. It is, therefore, a simple and very safe way to enter several websites. How to obtain the mobile digital key online, at the Authentication Portal.
Estimated reading time: 9 minutes
Table of Contents
How to obtain the Digital Mobile Key
To create your Key, you can access the Portal ePortugal, selecting the option “AUTENTICAÇÂO.GOV” and “Digital Mobile Key”.
Alternatively, you can go directly to the Authentication Portal, “Authentication.pt".
When selecting “Digital Mobile Switch” as shown on the previous screen, the system returns this position:
Within the Authentication Portal, the “Digital Mobile Key” menu is selected and you have to click on the “Activate” button.
There are 3 ways to get the mobile digital key:
- In person, at one of the branches or citizen shops or companies.
- Online, if you have a Citizen Card, card reader and PIN code for authentication.
- Through the Finance Portal, which sends a letter with a temporary password, which you will have to change to your own PIN. You don't need a card reader.
Let's follow this last option to order and create the mobile key.
Thus, to create the “Digital Mobile Key”, you must select “Activate Via Finance”.
When selecting the Key Request, through the Finance Portal, you access the website of the Tax Authority (AT) where you request your key.
Activate the Mobile Key through the Finance website
Authentication is done by entering your tax identification number (TIN) and the password you use to access the Finance Portal.
It is admitted that you are already registered on the Finance Portal.
After authenticating, you must authorize your Taxpayer Number and Name to be provided to the Digital Mobile Key entity.
After Authorization, you are automatically directed to the authentication site, via the Finance Portal.
Once here, associate the cell phone number you want to use with your Digital Mobile Key. You can also associate your email.
Click on the box at the bottom of the screen to indicate “I authorize obtaining civil identification, name, address, date of birth and expiration date of the citizen card (mandatory)”.
Finally click on the “Next” button.
The authentication process will follow.
If an error occurs, try again later.
Whenever an error occurs, for security reasons the system forces you to start over from the beginning.
We arrived at the information that “You will receive an SMS with the security code”. You have to enter that code in the dialog box.
Enter the security code you received on your mobile phone, for example “123456” and the process is complete.
You receive the information saying that, within five working days, you will receive a letter with the PIN code of the Digital Mobile Key.
Finalize the Authentication Process
You will receive the letter, via CTT, a few days later, with the Digital Key PIN code that will allow you to continue the authentication process. It is a temporary code, generated automatically and randomly and which is used exclusively for authentication.
Return to the authentication location.
Authenticate to obtain the definitive Digital Mobile Key.
Enter your mobile number and the PIN sent to you and click on "Authenticate".
You can now change the temporary PIN to the permanent one.
Use a PIN that is between 4 and 8 digits. The more digits, the more secure the access becomes.
Do not forget this PIN and if you keep it, do so so that it is only accessible and visible to you.
And thus ends the process of obtaining the PIN to create the CMD.
Portals that already use the Digital Mobile Key
There is a long list of entities adhering to authentication through the Digital Mobile Key (CMD) and which can be consulted on the Portal “Authenticação.gov”.
Example of some Portals that use the CMD, to register,
- National Health Service - SNS Online
- Online Criminal Record
- Capital Gains Tax on the Sale of Property
- Using your driving license on your mobile phone
Using Digital Mobile Key
For example, you can enter the Finance website, even if you are registered, using the CMD.
On the website of the Tax Authority (AT), click on “Start Session”.
Choose the “Gov.Pt” option and click on “AUTENTICAÇÃO.GOV”.
Finally, click on “Authorize” the use of your tax identification.
Here are the steps already explained and it is positioned in your data from the Finance Portal.
In this simple and secure way, you will know how to obtain your digital mobile key.
This form of authentication is also available to foreign citizens residing in Portugal
Take advantage of technologies to make your life simpler!
- How can you have your identification on your cell phone, driving license, citizen card, among others
- How to apply for a Social Security non-debt declaration
- How to ask for a certificate of non-debt to Finance
- Get proof of address
- Online citizen card renewal
We wish that the article had been to your satisfaction.
Help us improve!
We will be very grateful if you give us your contribution to make it better.