The easy print app can use common ones approved in Germany
Read slot machines at the VDAI interface. This requires a
Bluetooth dongle that is plugged into the VDAI socket of the machine.
The "readout strip" is stored on the Android device and can be
from there via all the usual ways (e-mail, Whats App, memory card
etc.) are shared.
In addition, the app supports printing on paper via many
Bluetooth printer.

This dongle can be purchased from k-modus GmbH and your dealers.
The entire set consists of an Android tablet with readout dongle and
Printer in a practical case
www.kmodus.de