eIDAS Signature Solution

Achieve EU-wide compliance with Sign.Plus's QES signatures

Sign.Plus is your all-in-one solution for eIDAS signatures, including Qualified Electronic Signatures (QES), ensuring full legality across the EU. Equipped with advanced encryption and robust identity verification, Sign.Plus secures every transaction while meeting top eIDAS standards for businesses of all sizes.
With Sign.Plus, you can use QES signatures using API, computer, or mobile with full eIDAS compliance.

free electronic signature tool esign cocs
QES with Sign.Plus

Qualified eSignatures with Sign.Plus

To comply with the law, electronic signatures must be supported by qualified certificates issued by a Qualified Trust Service Provider (QTSP) that meets the criteria outlined in the eIDAS Regulation. A QTSP is defined as a provider of trust services that fulfills the specifications in the eIDAS Regulation.

Sign.Plus partners with Swisscom Trust Services, a recognized QTSP, to issue Qualified Electronic Signature (QES) certificates. Users have the option to choose Qualified Electronic Signatures (QES) when creating signature requests via Sign.Plus. They will be redirected to a Swisscom page for identity verification before they can sign via Sign.Plus.

Sign.Plus is legally valid under EU and Swiss law

The legality of electronic signatures in the European Union is governed by the eIDAS regulation. In Switzerland, the corresponding legislation is the Federal Act on Electronic Signatures, also known as the ZertES regulation.

legal esignature EU Swiss law

If you are in Switzerland and wish to learn more about ZertES regulation, visit the ZertES Signature page.

Secure documents during signing and beyond

Sign.Plus ensures you have all the necessary elements for a legally compliant eSignature, eliminating the need to deal with third-party providers or extra services.

Trust service provider (TSP)

Trust Service Provider (TSP)

We use signature certificates issued by recognized Trust Service Providers (TSPs).
Identity provider (IDP)

Identity Provider (IDP)

We provide a range of identification methods, supported by established Identity Providers (IDPs).
Updated regularly

Updated Regularly

We continually adapt to market developments, ensuring we stay current with all technical and legal changes.
Trust service provider (TSP)

eIDAS Signature API

With the eIDAS compliant signature API, you can send documents for signature directly from your own platform, whether that’s a CRM, HR system, or custom workflow.
tamper-proof audit trails

Tamper-Proof Audit Trails

Secure logs capture all activity, including names, IP addresses, and devices, ensuring every action is traceable and unalterable.
Updated regularly

Enterprise-Grade Security

Protect data with comprehensive security measures, including robust encryption, strict access controls, real-time threat detection, and regular penetration testing.

How to obtain QES with Sign.Plus?

QES requires identity authentication before a digital certificate is issued. Users must electronically verify their identity during the signing process when prompted.

1

Prepare Your Document

Access your Dashboard. Click on Sign, and follow the prompted steps.

When you reach the Add Fields stage, prepare your document by adding necessary fields for your signer to complete.

2

Choose QES as eSignature Level

Before clicking Confirm, find E-Signature Level option at the top right of your page.

Select Qualified Signature (QES) for compliance with eIDAS or ZertES regulations.

3

Send or Sign Your Document

Click on Send.

Signers receiving your document will be redirected to our Swisscom partners' website for additional verification steps.

Types of eSignatures

eSignature meanings and types in the EU

eIDAS classifies three types of electronic signature: simple electronic signature (SES), advanced electronic signature (AES), and qualified electronic signature (QES), each offering different levels of legality and security. Sign.Plus offers each level of legal validity from a single source, ensuring your needs are fully met.

Basic

SES

Simple electronic signature
confirm signature ses
Confirm signature with a click.
Informal agreements and basic document signing:
  • Service contract
  • Privacy policy
  • Employment contract
  • Purchase orders
  • Permanent rental contract
High

AES

Advanced electronic signature
one time password
One-time password.
Business contracts, financial transactions:
  • Non-disclosure agreement
  • Rental agreement
  • Copyright contract
  • Partnership agreements
  • Personal insurance
Maximum

QES

Qualified electronic signature
signature with ID
Signature with additional ID.
Legal agreements, contracts, government documents:
  • Audit report
  • Bank account opening
  • Consumer loan contract
  • Consumer credit contracts
  • Temporary rental contracts

Simple electronic signature (SES)

Simple electronic signature is a basic type of eSignature most commonly used for documents that do not have stringent legal form requirements and carry minimal liability risk.

SES eSignatures serve as digital affirmations, functioning similarly to a scanned image of a signature, clicking an "I accept" button, or simply typing your name.

Advanced electronic signature (AES)

Advanced electronic signature is a specialized type of eSignature that meets a certain regulatory criteria to provide enhanced authenticity and security.

AES eSignatures feature a higher level of signer ID verification, uniquely linking the electronic signature to the signer and safeguarding the integrity of their signature.

Qualified electronic signature (QES)

A qualified electronic signature is the only type of eSignature granted special legal status in EU member states, deemed as the legal equivalent to a handwritten signature. It represents the highest standard of eSignature legally recognized in courts.

This specific form of eSignature must meet advanced electronic signature requirements and additionally be certified by a trust service provider. Such providers must be listed on the EU Trusted List (ETL) and accredited by an EU member state, ensuring both the authenticity of the signed document and the identity of the signer.

Upgrade to an eIDAS signature solution

Sign.Plus delivers Advanced and Qualified Electronic Signatures (QES) under eIDAS, backed by robust encryption and user-friendly workflows. Save time, secure every transaction, and avoid relying on third-party providers—finalize legally valid agreements across the EU with complete peace of mind.

Seamless integration is supported through the eIDAS API, making it easy to incorporate compliant workflows into existing systems, from CRM to HR platforms. Cross-platform accessibility ensures users can sign from anywhere on any device, while strong identity verification processes provide maximum legal protection. Thousands of businesses already benefit from tamper-proof eSignatures—elevate digital transactions today.

Frequently Asked Questions

Is Sign.Plus recognized in all EU member states?
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Yes. By following eIDAS rules and working with QTSPs, Sign.Plus signatures are legally valid throughout the EU.
How do you ensure identity verification for QES?
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We partner with regulated QTSPs that use thorough identity checks, including document verification and live video calls when required.
Is the eIDAS API difficult to integrate?
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Our API is designed to be developer-friendly, with comprehensive documentation and support. You can integrate it into your existing workflows or platforms with minimal disruption. Learn more

DISCLAIMER: The information on this site is for general information purposes only, and Sign.Plus cannot guarantee that all the information on this site is current or accurate. This is not intended to be legal advice and should not be a substitute for professional legal advice. For legal advice, consult a licensed attorney regarding your specific legal questions.