Electronic signature

Digitally sign documents in 2 minutes, and manage the process in real time.

More than 2500 companies already trust us


76% of the contracts sent using Signaturit are signed on the same day

What electronic signatures do we offer?

Simple signature

Sign with one click or enter a PIN sent via SMS.

It's super easy, but doesn't enable the signatory to be uniquely identified.

Advanced signature with biometrics

Done with a pen stroke, just like signing on paper.

It's fast and easy to use, and enables the signatory to be uniquely identified.

Advanced signature with digital certificate

The signatory uses their digital certificate, issued by third parties.

A digital certificate is the only method that technically and legally guarantees a person's identity on the Internet.

Qualified signature

The signatory uses a digital certificate issued by Signaturit. Our digital certificate is qualified.

A digital certificate is the only method that technically and legally guarantees a person's identity on the Internet.

How does Signaturit's electronic signature work?

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Upload the document or contract that you have to send for signing to our platform, in PDF or Word format. When it is ready, click “Send” to send it to the signer.


The signer will receive the contract by email. He or she can sign it at any time, from a computer, tablet, or mobile phone, without installing any additional apps.


You can follow the signing process as it happens, check if a document is signed, automate deliveries, create reminders, and much more.

Integrate Signaturit into your software using our API and send documents to be signed without changing tools or locations.

What documents can be signed?

Facility services

Temp and perm employment contracts

Occupational risk prevention

Receipts for equipment delivery


Real estate

Rental contracts

Reservation and security deposit contracts

Private sales contracts



Insurance policies

SEPA mandates

Account or address change forms



Employment offers

Temp and perm employment contracts

Personal data protection contracts


Sales teams

Sales contracts

Purchase orders

Service provision contracts


Legal departments

Meeting minutes

Partner agreements

Investment contracts


Advantages of our digital signature technology

Legal support in all your transactions

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Security in your signing processes

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Improved signing experience for you and your users

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Are you interested?

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FAQs about electronic signatures

What is an electronic signature?

Like handwritten signatures, electronic signatures are a legal concept that captures the intention of the parties bound by the terms of a signed document.

European Regulation No. 910/2014, also known as eIDAS, defines electronic signatures as “electronic data in attached to other electronic data or logically associated with them, used by the signatory to create a signature.”

How do electronic signatures work?

Electronic signatures, like handwritten signatures, are unique to each person. Their operation follows a protocol called PKI, which is based on a mathematical algorithm that generates two long numbers, called keys.

Each part keeps one of the keys secret (private key) and makes the other one public (public key).

How do you use electronic signatures?

Using an electronic signature is very simple. There are two options:

- Sign electronically online through a cloud-based system with a trust service provider. The process is quick and simple. For example, Signaturit’s electronic signature solutions.

- Sign using signature applications, whether they be independent or incorporated into another kind of software. However, the inconvenient part about this alternative is that it requires both the sender and the receiver to use a compatible software. Another option would be to use the application offered by the State administration.

What is the difference between an electronic signature and a digital signature?

The terms “digital signature” and “electronic signature” are often confused and used interchangeably, but they are actually different things.

A digital signature is a cryptographic method that forms part of the advanced and qualified electronic signatures. It aims to encrypt the data into one document to make it more secure.

When it comes to electronic signatures, that refers to a legal concept and an identification method equivalent to a handwritten signature. With it, a person gives their consent through electronic means, leaving a registry of the date and time it was done.

What can you sign using electronic signatures?

Contracts and documents carried out electronically shall be valid in Spain as long as all parties grant their consent freely for executing contracts for legal purposes.

Electronic signatures in Spain can be used to sign all kinds of agreements that are not subject to restrictions that may prevent it from being carried out.

The most common cases of use are: labour contracts, real estate rentals, buying and selling personal and real property, agreement to personal data processing, SEPA mandates, commercial contracts, etc.

What are the benefits of electronic signatures?

Thanks to electronic signatures, the signatory has the following benefits:

- Savings, both economically and on time management: They allow you to access documents that have been signed anywhere in the world in just a few seconds. You can save on shipping costs and significantly reduce wait times.

- Better efficiency in processes and customer and employee satisfaction: Put an end to repetitive administrative tasks that take up a lot of time and avoid making the signatories commute to a new location.

- More technical and legal security. Electronic signatures guarantee the signatory’s identity and the integrity of the signed document.

What types of electronic signatures are there?

The (EU) Regulation 910/2014 established three types of electronic signatures:

1) Electronic signature: the simplest way to sign electronically. For example, an electronic signature could be a check box.

2) Advanced electronic signature: this is an electronic signature that has more requirements than the former version, so it is more secure. Such requirements are established in article 26.

3) Qualified electronic signature: demands a qualified certificate for an electronic signature (eID), as well as a secure device for creating the qualified signature, which complies with the requirements established in the aforementioned Regulation.

How valid is an electronic signature?

The 3 types of electronic signatures - simple, advanced, and qualified - are legal and regulated in the European Union through the eIDAS, which is directly applied to all member states.

In Spain, Law 6/2020 regulates trust services and their legal effectiveness as a supplement to the provisions of the eIDAS Regulation.