Usage in the commercial sector

You would like to use the interface of the Handy-Signatur / ID Austria (E-ID) for purposes in the commercial sector? Please observe the following information:

An agreement between A-Trust and your company is required so that you can fully use the A-Trust Handy-Signatur for your company. This agreement also sets out in particular the economic parameters. The required agreement is concluded, for example, as part of an e-Tresor module booking.

Get an idea of the implementation options - find out more at!

Usage of the Handy-Signatur interface

On behalf of the Republic of Austria, A-Trust operates the application interface „Security-Layer“ of the Handy-Signatur and ID Austria (E-ID). E-government applications are able to use the Handy-Signatur/ID Austria functionality via this interface.  In principle, the interface can also be used commercially by providers of signature services by submitting signature requests to A-Trust via the interface. To use the interface commercially, an agreement with A-Trust GmbH is required: This agreement sets out in particular the availability of the interface and the economic parameters.

If you are considering the use of the Handy-Signatur interface for commercial transmission of signature request to A-Trust, please contact our sales department at