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Qualified Electronic Signature | Lex Corporation

Qualified Electronic Signature | Lex Corporation
Digital Transformation • eIDAS Compliant

Qualified Electronic

As legally binding as a handwritten signature under EU eIDAS regulation. Secure, mobile-first signing for Polish public administration and international business operations.

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Where precision meets mobility

Administrative

Handle official matters with full legal certainty. Submit documents via ePUAP, apply for social benefits in Emp@tia, file taxes online, and instantly access the National Criminal Register (e-KRK).

Business

Sign ZUS declarations, JPK files, financial statements for e-KRS, public procurement bids, and manage B2B/B2C contracts and HR documentation with full compliance.

Private Life

Conveniently settle NFZ formalities, sign private agreements, medical consents, rental contracts, and other personal documents from anywhere.

Adjust technology to your needs

SimplySign Mobile App

SimplySign App

Cloud-based mobility at its finest. Sign up to 15 documents per second using only your smartphone or tablet with secure 2FA. Works everywhere.

Certum Smart Card

Card & Reader

The traditional high-security option. Physical smart card + USB reader for workstation-based signing.

Efficiency in the
Digital Era

Certum Qualified e-signature is a versatile, eIDAS-compliant solution accepted by all key Polish public administration systems, private suppliers, and international clients. Enjoy 3-year validity (the longest on the market), automatic Adobe recognition, 24/7 access, and 5,000 qualified timestamps per month included.

  • ePUAP & ZUS declarations
  • National Court Registry (KRS)
  • National Criminal Register (e-KRK)
  • Tax Office (e-Deklaracje & Płatnik)
  • Public Procurement
  • Standard Audit File (JPK)
  • National Health Fund (NFZ)
  • B2B / B2C contracts & invoices

Ready to secure your digital presence?

Choose the 3-year validity — the longest in the market.

Visit Certum’s Website Book visit now

Frequently Asked Questions

What is a Qualified Electronic Signature?↓
A Qualified Electronic Signature (QES) is the highest level of digital signature under the EU eIDAS Regulation. It has the same legal weight as a traditional handwritten signature.
How long is the validity period?↓
Certum offers up to 3 years — the longest validity period available on the Polish market.
Is it recognised internationally?↓
Yes. Thanks to eIDAS compliance, your Certum QES is legally valid across the entire European Union.
How fast can I sign with SimplySign?↓
Up to 15 documents per second — the fastest mobile qualified signature solution.
Are signed documents admissible in court?↓
Yes — in Poland and across the EU. They carry the same value as handwritten signatures.

Still have questions? Book a consultation