Robin Good: Projectorfy is a new iPad app which allows you to engage participants at a live event by running Tweetwalls, polls and public announcements on the event official screens.
Create live polls that attendees can vote for using their mobile device and see the results projected live during the event.
Projectorfy can work with TV screens, projectors, or computer screen displays as long as they have they are compatible with one of these types of video signal:
Resolutions supported: 640 x 480 720 x 480 1024 x 768 1280 x 720 (720p) 1280 x 1080 (1080i)
A WiFi connection is also needed.