Is it possible to eSign a document without using digital certificates?

Yes. You can sign a document electronically using biometric or digitised signatures, which are fully legally valid.

Yes, of course. You can sign a document electronically even if you do not have a digital certificate. To do so, you can use digitised or biometric signatures. These are handwritten electronic signatures that do not require the use of certificates, but rather a device capable of capturing a large amount of biometric data from the signatory.

If you do not have a specific device for this purpose either, there is another option for signing documents with full legal validity. For example, you can capture a handwritten electronic signature, together with electronic evidence (such as an SMS OTP, email OTP, etc.), which allows the signatory to be uniquely identified via their smartphone.

In both cases, the signatures captured, generated and stored contain sufficient data to be considered an advanced electronic signature:

• It uniquely identifies the signatory
• A unique link between the signatory and the signed data
• The signature must be capable of determining whether the accompanying data has been tampered with after the message was signed.
• Guarantee that the signatory is the only person capable of generating that signature

The Viafirma product suite includes all the signature features listed above. It also allows users to add further evidence: the geographical location at the time of signing, attached images, annexes, time stamps, etc. This provides additional evidence that lends greater legitimacy to the signature in the event of repudiation.