Live votes during presentation

Live votes can increase participation of your audience but there are quite some technical challenges.

For my most recent presentation I have set up my own Wifi using an old Fritz! Box flashed with Freeze that can route all incoming traffic towards a Macbook (that is connected to the router by cable).

The Macbook itself is running a webserver that delivers the questions to the mobile phones in the audience. Mobile clients basically see this page


The presentation with all results is running in a Chrome full screen windows that is mirrored to the projector. It is basically an export from Powerpoint pictures that are shuffled around by a javascript framework (bespoke.js). Results are stored in an adhoc sqlite database and charts are produced on the fly by d3.js.

All scripts are available per email request.