Sign your digital documents biometrically just like on paper

With doceo BioSign F2F sign just as you would with paper, but with all legal guarantees


Signing documents anywhere with a mobile phone or tablet


Increasing the quality of signature processes, including traceability.


eIDAS compliance (Article 26 of the European Regulation 910/2014)


Secure and fast transactions, with strong legal backing in disagreements


API for integration with external systems


An app to digitally sign PDF documents with a biometric signature in person: Employment or commercial contracts, authorizations, legal or notarial agreements, or professional service or consulting reports

Sign any document in person and in real time, saving time and complying with legislation.

  • Creation of signature request and sending of documents pending signature to the enabled device.
  • Signature request for a single or several documents in the same request.
  • Allows the document to be viewed in its entirety before signing.
  • Signature data is captured and uniquely linked to the document.
  • Notifications by mail in case of acceptance or rejection of the signature.
  • Possibility of receiving the document signed by the signatory at the e-mail address indicated by the signatory.
  • Availability of an evidence document for authentication.
  • Application compatible with Android.
  • Easy integration with any document management solution such as Doceo Store or ERP.
  • La transformación digital afecta a todos los sectores e implica la obligatoriedad de la firma biométrica cada vez en más documentos digitales.
  • Toda la documentación en formato digital firmada, sin necesidad de impresión en papel.
  • Permite definir el número de firmantes y el protocolo en que deben firmar.
  • Apto para personas poco adaptadas a la tecnología. La firma biométrica reproduce en el medio digital la firma manual.
  • Descargue un documento de evidencias para la autentificación ante notario de su firma si surgieran requerimientos legales o dudas de autentificación.
  • La firma biométrica demuestra compromiso con la seguridad y la tecnología, mejorando la reputación en sus clientes.
  • Si lo necesita, puede integrar la firma biométrica o la firma (rúbrica) digital o la firma doble factor según las necesidades de su empresa.
  • Fácil integración en cualquier solución de gestión documental como Doceo Store, nuestro gestor documental, o el que el cliente elija o ya tenga implementado.

When we want to add more than one signature to the same document, we also offer an option to do so in different ways:

ONE – allows that regardless of the number of signatories it is sufficient to validate a document with the signature of a certain number of customers. Once the required number of signatories have signed, the remaining signatories will no longer have the document as pending signature, their signature status will change to “unnecessary”.

PARALLELO – allows the same document to be signed by more than one person at a time, but unlike one, it does not validate the result until all clients have signed.

SERIE – acts as a queue, it does not allow customers to sign until the one in the previous position in the signing order defined when making the request has signed. The document will not be validated until everyone has accepted or if someone declines.

Doceo BioSign F2F complies with European eIDAS and GDPR regulations

We guarantee you the peace of mind of being able to dispose of your evidence in the event of a legal requirement


The biometric signature or electronic signature of face-to-face electronic documents is particularly

Public administrations

Government institutions may require face-to-face biometric signatures to authenticate official documents, forms and administrative procedures, improving the security and efficiency of processes.

Health and medical sector

In healthcare, biometric signature with a stylus can be used to authenticate medical consents, electronic prescriptions and other medical documents, ensuring the integrity and authenticity of the information.

Legal sector

Law firms, notaries and other legal professionals can use biometric signatures with a stylus to sign contracts, legal agreements and other legal documents in a secure and authenticated manner.

Banking and financial services

Banks and other financial institutions can use biometric signatures with a stylus to authenticate transactions, open accounts, sign contracts and other financial documents.


Insurance companies can use the biometric signature with a stylus to authenticate policies, claims and other documents related to the insurance industry.

What is the electronic signature (rubric)?

  • Electronic signatures are based on cryptographic technology to verify the authenticity and integrity of a document or transaction.
  • It can include different methods, such as passwords, codes or digital certificates, to validate the identity of the signatory.
  • It is not directly linked to physical characteristics of the signatory.
  • It is not directly linked to physical characteristics of the signatory.
  • It is not directly linked to physical characteristics of the signatory.
  • It is widely used and legally recognised in many countries as a valid form of authentication in digital documents.

Electronic signatures rely on cryptographic technology and digital authentication methods, while biometric signatures use physical or behavioural characteristics unique to the signatory (storing data such as pressure, tilt and speed of a person’s handwritten signature). 

What is the biometric signature?

  • Biometric signatures use a person’s unique physical and behavioural characteristics, such as handwritten signature, fingerprint, voice, retina or facial recognition.
  • These biometric traits are captured and digitised to generate a digital representation that is used to authenticate the signer’s identity.
  • It provides an additional layer of security, as it is based on unique and difficult to duplicate features.
  • Biometric signature is a unique and difficult to duplicate feature.
  • The biometric signature can recreate the handwritten signature in the digital medium, allowing for a greater sense of familiarity and authenticity.


What data does the biometric signature capture?

The biometric signature can capture a variety of data, depending on the method and technology used. Some of the common data that can be captured in a biometric signature include:

  • Speed and acceleration: The speed and acceleration of the strokes made during the signature is recorded.
  • Pressure: The speed and acceleration of the strokes made during the signature is measured.
  • Pressure: The pressure exerted on the surface during the signature is measured.
  • Pressure: The pressure exerted on the surface during the signature is measured.
  • Time: The time taken to make the signature is recorded, including the duration of each stroke and pause.
  • Direction and angle: The time taken to make the signature is recorded.
  • Direction and angle: The direction and angle of the strokes made during the signature is captured.
  • Shape and size: Characteristics of the shape and size of the signature are recorded, such as the length and height of the strokes.

What are the requirements for a biometric signature?

The validity of a biometric signature is based on meeting the requirements set out in Article 26 of the European Regulation 910/2014 (eIDAS). These requirements are:

  • Unique linkage to the signatory in order to irrefutably associate it with his/her identity.
  • Enable the identification of the signatory.
  • Created using electronic signature data of a high level of confidence or under his exclusive control.
  • Linked to the signatory in order to be irrefutably associated with his identity.
  • Be linked to the signed data, detecting any subsequent modification.

The biometric signature that meets these requirements must also comply with data protection regulations, such as the European Data Protection Regulation and Organic Law 3/2018. This confers legal validity on the biometric signature.

What are the benefits of biometric signatures?

The biometric signature provides a number of important advantages. Firstly, it ensures greater security through the use of unique characteristics of each individual, making forgery more difficult. In addition, it offers high accuracy and reliability by avoiding human error. The user experience is enhanced by using known physical or behavioural characteristics. The biometric signature also contributes to the reduction of paper usage by being digitally produced, saving time and resources. It also complies with legal and regulatory requirements by providing strong evidence of authenticity and traceability of transactions. In short, biometric signatures provide enhanced security, accuracy, efficiency, time savings, positive user experience and regulatory compliance, while driving the transition to a paperless environment.

What is the legal validity of the biometric signature?

The legal validity of biometric signatures is regulated by Regulation (EU) No. 910/2014, known as the eIDAS Regulation. This regulation establishes a legal framework for electronic identification and trust services in electronic transactions in the European Union.

According to eIDAS, biometric signatures can have full legal validity as long as they comply with the authenticity, integrity and non-repudiation requirements set out in the regulation. The biometric signature must allow the unique identification of the signatory and be irrefutably linked to the signatory’s identity.

In addition, the biometric signature must comply with personal data protection regulations, especially the General Data Protection Regulation (GDPR) and the Organic Law on the Protection of Personal Data and Guarantee of Digital Rights (LOPDGDD). This means that the processing of biometric data used in the signature must comply with the principles and obligations established in these regulations.

Which mobile phone brands allow stylus and biometric signature?

Several mobile phone brands support the use of stylus pens and offer biometric signature features. Some well-known brands include Samsung, with its Galaxy Note line and Galaxy S21 series supporting the S Pen and biometric signing; Apple, with the Apple Pencil and the option of biometric signing using Touch ID or Face ID on selected iPhone models; and Huawei, with devices such as the Mate series and P series supporting the Huawei M-Pen and biometric signing using the fingerprint sensor or facial recognition. It is important to check the specifications and compatibility of each mobile phone model to determine whether they support stylus and biometric signature features.

Which tablet brands support stylus and biometric signature?

There are several brands of tablets that offer stylus support and biometric signature functions. Some of these brands include Apple iPad, Samsung Galaxy Tab, Microsoft Surface Pro and Huawei MatePad.

Apple iPads support Apple Pencil and allow biometric signing via Touch ID or Face ID on selected models. Samsung’s Galaxy Tab series tablets support the S Pen and offer biometric signature options using the fingerprint sensor or facial recognition. Microsoft’s Surface Pro tablets support the Surface Pen and enable biometric authentication through Windows Hello, which includes facial recognition and fingerprint recognition. Huawei’s MatePad series tablets support the Huawei M-Pen and offer biometric authentication options using the fingerprint sensor or facial recognition.


Doceo BioSign offers several options to best suit your specific needs

Doceo BioSign Delivery

Signing of delivery documents in real time, saving time and money. With incident reporting including photos, comments, geolocation, etc.

Doceo BioSign Mobile

The two-factor signature can be beneficial for any person or entity wishing to strengthen the security and protection of their documents.

Doceo BioSign Forms

Real-time signing and management of dynamic process-based forms.

With doceo BioSign better, quicker and easier than if you did it on paper

Public administrations, SMEs and large national and international companies rely on our solutions.

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    DoceoSoftware, S.L. participates in the ICEX-Next Export Initiation Programme, and is supported by ICEX and co-financed by European ERDF funds. The purpose of this support is to contribute to the international development of the company and its environment.


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