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How to Start | Qualified Electronic Signature | Lex Corporation
3 Simple Steps

How to Start with
Qualified Electronic Signature

Get your legally binding digital signature quickly and securely — whether you buy from us or already have a certificate from Certum.

01

1. Purchase Your Certificate

As a verified Certum partner, Lex Corporation offers the most convenient way to obtain your Qualified Electronic Signature.

Recommended: Buy directly from us — we handle the full ordering process with dedicated support.
Already purchased from Certum? No problem — contact us for fast verification and activation.
02

2. Verification & Activation

Your identity must be verified before activation. Choose the option that suits you best:

Option A — Visit Our Office (Recommended)

Come to our office in Poland. Our qualified operator will:
• Verify your identity document
Option B — Remote via Notary (For clients outside Poland)

1. Visit any notary public in your country
2. Authenticate your original wet signature
3. The notary sends the documents to Certum
4. We assist you with final activation
03

3. Start Signing

Once activated, your Qualified Electronic Signature is ready to use immediately.

You can sign documents with full legal validity in Poland and across the European Union — including ePUAP, ZUS, KRS, tax declarations, contracts, and more.

No more printing, scanning, or courier deliveries.

Frequently Asked Questions

What is a Qualified Electronic Signature?↓
It is the highest level of digital signature under EU eIDAS regulation. It has the same legal weight as a traditional handwritten signature and is accepted by all Polish public institutions and courts.
How long is the validity period?↓
Up to 3 years — the longest validity period available on the Polish market.
Do I need to visit your office?↓
It is recommended for the fastest activation, but if you are outside Poland, you can use the remote notary option.
How long does activation take?↓
If you visit our office, activation is usually completed within 15–30 minutes. Remote notary process may take a few days.
Can I use the signature immediately after activation?↓
Yes. Once activated, you can start signing documents right away using SimplySign app or the card reader.
Is it accepted for KSeF and ZUS?↓
Yes. Your qualified electronic signature is fully accepted by all Polish public systems including KSeF, ZUS, ePUAP, and KRS.

Still have questions? Book a consultation with our specialist

Ready to get your Qualified Electronic Signature?

Our specialists will guide you through the entire process — from purchase to full activation.

Contact Lex Specialist Send us an email