Table of contents
- CNS: what is the Carta Nazionale dei Servizi
- What is the CNS used for
- How to obtain the CNS
- How to use the CNS
- Validity and renewal
CNS: what is the Carta Nazionale dei Servizi
When it comes to digital identity and online public administration services, the CNS plays a key role. But what is the CNS, exactly?
The acronym stands for Carta Nazionale dei Servizi (National Service Card), a digital device that allows citizens, businesses, and professionals to access online services in a secure and certified way.
Its main purpose is to provide reliable identification of users online, enabling authentication on institutional portals and the digital signing of documents. It is valid throughout Italy and is often integrated into the health card, but it can also take the form of a smart card or USB token.
What is the CNS used for
The Carta Nazionale dei Servizi is primarily used to access online public administration services from the electronic health record to tax documents, from chamber services to welfare services.
The use of the CNS is widespread across multiple sectors, including those of the Chamber of Commerce, the Italian Revenue Agency (Agenzia delle Entrate), and the regional administrations.
By inserting the card into a smart card reader connected to a computer and entering the PIN code, users can access restricted areas, consult personal data, send documents, or request official certificates.
One of the most important features is the digital signature. The CNS contains a digital certificate that allows users to apply a qualified electronic signature with the same legal validity as a handwritten signature. This is especially useful for signing contracts, financial statements, tax declarations, or official communications.
How to obtain the CNS
The CNS can be requested at authorized offices, including those of the Regions, Chambers of Commerce, and other accredited entities. In many cases, as mentioned, it is embedded within the health card, but activation requires linking the card to the user’s tax code and obtaining the associated PIN code.
During issuance, users also receive security codes (PIN and PUK) necessary for use and access recovery. The CNS is valid for three years, but the digital certificates can be renewed for an additional three years, avoiding the need to physically replace the card.
How to use the CNS
To use the CNS, a compatible smart card reader is required, connected to a computer or, in some cases, to a smartphone via a mobile app. Once the card is inserted and the PIN code entered, the user can authenticate on authorized institutional portals and access the available services.
Examples of accessible services include:
- Viewing and submitting declarations via the Italian Revenue Agency;
- Filing digital applications through the Chamber of Commerce;
- Verifying and downloading personal data and official certificates;
- Digitally signing electronic documents for health, legal, or administrative purposes.
In the business world, the CNS is often used by company owners or legal representatives to interact with the Business Register, send official communications, or submit applications through certified email (PEC) and digital portals.
Validity and renewal
As noted earlier, the CNS is valid for three years, but it can be renewed for another three years following the procedures established by the issuing authority. In the event of loss, expiration, or malfunction, the card can be replaced at authorized service points.
Renewing digital certificates is essential to continue using the card without interruption. Renewal can often be done online using specific software provided by the issuing authorities or regional administrations.
Final thoughts
Today, the CNS is one of the main tools used to ensure digital identity for Italian citizens and provide access to online public administration services. Easy to use, secure, and legally recognized, it allows users to sign documents digitally, authenticate themselves on institutional platforms, consult personal data, and send official documents.
Understanding what the CNS is, how to get it, and how it works is essential for participating fully in Italy’s digital and administrative life. With its growing adoption, the CNS is a cornerstone of the country’s digital future.
