Glossary One-Shot Signature

One-Shot Signature

The term 'one-shot signature' refers to a method of creating qualified electronic signatures (QES) that has been optimised by PXL Vision for use in B2C processes. With this method, identification and signature are carried out in a single, seamless process — i.e. 'in one go' (one-shot).

Conventional QES signature procedures use reusable signatures that must first be purchased. Typically, both the issuer of the contract or document and the signatory must first register on a signature platform. This often involves considerable effort, such as creating a user account and setting up authentication for multiple signatures. Such processes are sensible for the B2B sector, where documents requiring a legally valid signature are regularly processed. In the B2C sector, however, where a signature is usually only required once (e.g. for an insurance contract or a loan application), this level of effort can be a significant obstacle for non-experts. This is one of the main reasons why QES has not yet become widely accepted, particularly in B2C processes, despite its legal equivalence with handwritten signatures.

PXL Vision's one-shot signature solution works without media discontinuity or the need for prior account creation. Companies simply provide their customers with a link to identify themselves and sign documents directly with a qualified signature. The entire process is digital and efficient, and does not require an app — making it ideal for business models that require high levels of security and legal validity, while remaining user-friendly for the mass market.

Legal framework

The one-shot signature fully complies with the European eIDAS Regulation (Art. 25) and the Swiss Federal Act on Electronic Signatures (ZertES). When used alongside verified identification, it also meets the Anti-Money Laundering Act's (AMLA) requirements for identifying contractual partners in financial transactions.

Advantages of the one-shot signature:

• Ease of use: No user account or setup is required.
• Speed: Identification and signature are carried out in one step.
• Legal security: eIDAS- and ZertES-compliant qualified electronic signature.
• MLA-compliant: fulfilment of the regulatory requirements for identification.
• Media disruption-free: Ideal for fully digital onboarding processes.
• Scalable: Ideal for B2C scenarios in financial services, insurance companies and public institutions.

The one-shot signature makes the qualified electronic signature suitable for widespread use without compromising security, legal validity or user experience.

Ideally, the service provider should also be able to retrieve the entire identification data package for onboarding purposes. This means that nothing stands in the way of an end-to-end digital onboarding process.