This version includes a mixed file of full film sound and an audio description sound track for blind audience and people with specific visual needs.
If you only need audio description service for live screenings, please install an awesome app called "Greta" in advance and download the audio description soundtrack.
-Greta iOS: https://itunes.apple.com/ch/app/greta/id793892423?mt=8
-Greta Android: https://play.google.com/store/apps/details?id=de.debesefilm.greta
When you use Greta for the first time, there is a request to accessing the microphone. Please allow. This awesome app will automatically sync the audio description on your phone with the film being screened.

"an empathy engine"—Indiewire