Professional sale and configuration of qualified electronic signatures and electronic seals. For individuals and businesses in Kraków and the entire Lesser Poland region.
Complete support for Certum qualified electronic signatures and electronic seals
A qualified electronic signature for individuals. Legally equivalent to a handwritten signature — required for KSeF e-invoices, ZUS and tax office documents, public tenders, and electronic contracts.
A qualified electronic seal is a tool for legal entities — companies, institutions, and authorities. Unlike a qualified signature (issued to an individual), a seal is issued in the organisation's name and confirms that a document originated from a specific entity and has not been modified after sealing.
Did you purchase a certificate directly from certum.pl and only need identity verification? Contact us — we'll guide you through this step quickly and without stress. The service is also available as part of purchasing a signature or seal from us.
Professional service and support at every stage
We are a certified Certum partner — the market leader in qualified signatures in Poland. You buy directly from an authorised source, with full support and access to official Certum services.
In most cases, your signature or seal is ready within one business day. Fast and efficient — no unnecessary waiting.
We travel to clients in Kraków and the surrounding area within a 50 km radius. No need to go anywhere — we take care of everything at your home or office.
We install the software, configure the certificate, and verify everything works correctly. We don't leave you alone with the device.
We treat every client individually. We advise, recommend the right solution, and guide you through the entire process — step by step.
We are available by phone and email. We respond quickly and offer after-sales support — even after installation.
A simple 4-step process — from contact to a ready signature
Call or write to us. We'll help you find the solution that fits your needs.
You'll place an order and complete identity verification — available remotely or in person.
We'll prepare and deliver your signature or seal. Usually within 24 business hours.
We install and configure the software — everything is ready to use straight after our visit.
Learn the entire process step by step — from contact, through identity verification, to activation and setup.
Read more →Find out how to check your certificate expiry date and what to do to keep your signature active without interruption.
Read more →GduLAB provides services in Kraków and the surrounding area. We travel to clients within a 50 km radius from Kraków.
Kraków
and surroundings up to 50 km
We'll respond as soon as possible — usually within a few hours
