Depend less on integrating with powerpoint - just have other options for viewing questions.
Options that work offline, that don't need to be pushed live.
We are a web service. It’s everything we do. We integrate with PowerPoint, Keynote, Google Slides, and directly from most every web browser under the sun. And, unlike most of our newer competitors we allow text message responses.
But, for now you’ve got to have the web for us to work. If WiFi or internet options are rough for you we recommend using the Text Message Response Method to allow people to respond and to tether or use your mobile phone as a WiFi hotspot for your presentation.
You can read more about how to respond by text message here: https://www.polleverywhere.com/guide#keywords_the_details