What is a Qualified Electronic Signature (QES)?

A QES is the highest level of electronic signature under European law. In Switzerland it is regulated by ZertES (SR 943.03); in the EU by eIDAS. It carries the same legal weight as a handwritten signature and is accepted by courts and government bodies.

Do I need an account to run the QES eligibility check?

No. The check is completely free and requires no Swiss Trust Layer account. If your number needs enrollment, activation is a one-time CHF 25 payment covering Swisscom's identity verification, still no account required.

Free 10-second check

Is your number ready for QES signing?

Find out in seconds if you can legally sign documents with a Qualified Electronic Signature. Available worldwide, any country.

No account needed

Any country worldwide

ZertES + eIDAS compliant

Enter your mobile number

Any country works. We check your number live against Swisscom's system, results in about 10 seconds.

Mobile number

Select your country code, then enter your number. Swisscom's identity verification accepts any passport worldwide.

SSL secured ZertES Art. 14 compliant Results in ~10 seconds

Simple process

How the check works

Enter your mobile number

Pick your country code and enter your number. Any country works worldwide, Swisscom has no restriction on phone origin or passport.

We check instantly

We run a live check against Swisscom's system to see if your number is already enrolled for QES signing. Takes about 10 seconds.

Get your result

If enrolled, you can sign QES documents immediately. If not yet enrolled, activate with a one-time CHF 25 payment and complete Swisscom's identity verification on the spot (about 2 minutes). Valid for up to 2 years.

Switzerland vs everywhere else, what's different?

The legal framework differs by country, but the result is the same: a legally binding Qualified Electronic Signature.

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Switzerland

ZertES, SR 943.03

For Swiss (+41) mobile numbers
Checked against Swisscom's trust services API
One-time CHF 25 activation if not yet enrolled
Legally binding under Swiss law (ZertES Art. 14)
Identity verification handled entirely by Swisscom

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Every Other Country

eIDAS Regulation

Available worldwide, any country's mobile number
Any passport accepted for identity verification
Verified by Swisscom via Fidentity passport scan
One-time CHF 25 activation if not yet enrolled
Legally binding across all EU member states (eIDAS Art. 25)

Frequently asked questions

Quick answers

How do I check if my Swiss mobile number is QES-ready?

Use the free checker at swisstrustlayer.com/qes-check. Enter your +41 mobile number, and we run a real-time check against Swisscom's system in about 10 seconds. No account required.

Can anyone worldwide use Qualified Electronic Signatures, or only EU residents?

Anyone worldwide. Swisscom's identity verification via Fidentity accepts passports from any country, not only EU/EEA or Swiss citizenship. Use the free checker at swisstrustlayer.com/qes-check.

Does my phone number need to be from Switzerland to use QES?

No. The eligibility check works with any mobile number worldwide. A UAE number, an Indian number, a US number, all accepted. Identity verification during activation also accepts any passport.

Get started

Ready to sign legally with QES?

Check your eligibility now, free, takes 10 seconds, no account needed to see your result.

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