The Mobile Digital Key is a very interesting tool for those who want to make their daily lives easier. With it, you can sign public and private documents without leaving home.

Furthermore, you can also make relationships with entities more practical. So, keep reading and see how it works and what you need to do to register one!

In fact, the Digital Mobile Key corresponds to a means of authentication and signatures. Therefore, it is a way to increase security in digital documents.

Also, to ensure a balanced relationship between public or private institutions and the citizen, since you can browse online portals of public or private institutions and sign documents with them.

Also known as CMD, the Key is an instrument that links a PIN, granted to a Portuguese citizen or resident, and a cell phone number that they have.

This, then, is what gives signatures authenticity. They only occur after authentication with a code that is sent to the phone of the person holding that PIN.

This then makes everyone's life easier and makes relationships easier and less bureaucratic. Therefore, after obtaining this key, whenever there is a need to sign a digital document you can use it.

It has an immutable PIN. However, for the subscription to end, there will always be a new and transitional code. That is, as soon as you authenticate the signature you will receive a message with a code on your cell phone.

It is temporary and only serves for a period and in that specific situation. Thus, by granting it you prove your authenticity to sign the document.

See the authentication step by step:

In summary, both Portuguese citizens and foreigners residing in Portugal can obtain the CMD.

In the case of Portuguese citizens, it is related to the individual's civil identification number. On the other hand, when it comes to foreigners, it is linked to the citizen's passport number or residence card.

In addition, companies also have access to the Mobile Key through the NIF.

Validity varies depending on the type of CMD user. In the case of a Portuguese citizen, the document is valid up to 30 days after the expiration of the identification document, whether the Citizen Card or the Identity Card.

When it comes to a foreign citizen, the validity will be identical to that of the residence permit, residence card or passport.

However, be aware that the Digital Mobile Key does not lose its validity if you renew your document before its validity period. With this, the CMD is also automatically renewed.

The advantages of CMD boil down to the practicality and security they bring to everyday life. This is because it allows access to documents, communications, provision of information and fulfillment of duties remotely.

In other words, citizens can have access to a series of services without leaving home. With this, you can sign documents and guarantee their authenticity.

And all this in safety, which is precisely the second main advantage. After all, with the validation process, it allows for safe processes, with the protection of your data.

There are several ways to request CMD. The request can be made online, in person at various locations or at the service counters of the Institute of Records and Notaries.

But do not worry! It may seem like a lot of information, but we will explain everything about it in the following text. There, you can find all the details on how to request and register a Digital Mobile Key.