Cloud-Based Certum Electronic Seal

A novelty only at Certum – Poland’s first qualified seal, which works:

  • without a physical card and reader
  • on mobile devices with: Android or iOS
  • on classic computers: PC and Mac OS X
  • period of validity: 1, 2, 3 years
from  €359.00  gross from  €359.00  net
 gross  net
In stock
Certum Electronic Seal

The cloud-based electronic seal will turn your smartphone into a modern working tool thanks to which you will quickly and conveniently stamp any company e-documents as if you signed them personally. It is the first service of this type offered on the Polish market, which:

  • works without a physical card and reader,
  • works both on mobile devices (Android and iOS) and on classic computers (PC, Mac OS).
  • allows signing e-documents on-line, round the clock, at any time, from any place in the world,
  • guarantees the security of on-line activities (compliance with eIDAS, 2-component authentication).

This solution uses a qualified certificate of an electronic seal, which, unlike an electronic signature, does not contain the data of a natural person, but only the data of an entity with legal personality (i.e. a company, organization, public administration entity). The service is compliant with the European eIDAS regulation, thanks to which documents bearing an electronic seal retain full legal force and validity.

For more information about the service, visit

The service is not intended for M2M applications and mass signing of e-documents.

One certificate. Broad application.

The Certum Electronic Seal can be used to mark both official company correspondence and internal documentation in your organization. Thanks to that, you can archive your protected documents.

External documentation

  • customer offers
  • flyers
  • e-invoices
  • legal documents

Internal documentation and archiving

  • employee documents
  • archived contracts
  • plans and strategies
  • reports and statements

Certum's cloud-based electronic seal is:

  • qualified certificate valid for 2 years
  • support for:

  • - mobile devices with: Android or iOS
    - computers: PC and Mac OS X
  • free software for signing and verification of e-documents/files
  • manufacturer's warranty: 24 months support

What do you need to use the cloud-based seal?

Use SimplySign only on mobile devices:

SimplySign – is a mobile application thanks to which you will sign any electronic documents. Within the frameworks of this application, there also is an OTP code generator, which is needed to authenticate the user to the remote signature service (can also be installed on another mobile device).

Basic requirements:

  • Internet access
  • Smartphone or tablet with the following operating system:
    - Android – from v4.1 and higher
    - iOS – from v9.0 and higher

Use of SimplySign on mobile devices and on a traditional PC/ Laptop:

SimplySign - download this application to your mobile device to use the OTP code generator, which identifies the user in the process of putting a signature on a traditional computer: PC / Mac OS. This application also contains a module, which allows signing documents on a mobile device.

SimplySign Desktop - download this application so you can use the key services available on the market such as: Płatnik, eDeklaracje, ePUE, etc. The SimplySign Desktop application emulates the connection of a physical cryptographic card and card reader to your computer. With this solution you will be able to use SimplySign in applications requiring the use of a physical card. This application also features the proCertum SmartSign module, which allows signing documents on a traditional computer: PC / Mac OS.

Basic requirements:

  • Internet access
  • Microsoft .NET Framework 4
  • PC/laptop:
  • operating system:

  • - Windows - 8, 10, 11
    - OS X - Catalina, Big Sur, Monterey, Ventura
  • CPU: Pentium 1 GHz (or compatible)
  • RAM: min. 4 GB
  • a minimum of 200 MB of free hard disk space before installing the application
  • screen resolution: 1024x768 or higher

1. Buy

Once you purchase an electronic seal, you will receive a virtual product that will be available in the Certum Panel and it will allow you to begin the certificate activation process.

2. Activate

You will start the activation in the Certum Panel by selecting fill out the request – the website will guide you through the process step by step.

3. Confirm identity

Certificate activation requires proof of identity. The service is provided against payment at a Certum Company Point, Certum Partner Point or at a Notary Public, according to the price list applicable at the location.

4. Submit documents

If you use the services of a Certum Company Point or a Certum Partner, all the formalities will be handled there.
If you use the services of a notary's office to confirm your identity, send the collected documents in traditional (paper) form to our address: Certum, ul. Bajeczna 13,71-838 Szczecin.

5. Install the software

After entering your certificate application information and confirming your identity, you will download the software so you can use your certificate on your mobile device or computer.

Before you download a qualified certificate:

6. Download the certificate

The qualified certificate will be issued within 7 working days after the correct documents have been received by Certum. Qualified signatures will be available for download electronically, you will receive a download link at the email address provided in the documents. If you choose to visit a Certum Company Point or a Certum Partner Point, you can take advantage of an additionally payable service and receive your certificate in 30 minutes or the next business day.

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