I wonder how field dependent it is. I have been to a lot of conferences and only one time did I go to a conference with anything other than a PDF/printed program. (It was the AAR, which perhaps not coincidentally was the worst conference I have attended.)
Elias G Saba
Academic conferences should return to simple PDF and printed programs. The apps and conference management systems are very annoying and work very badly. Thank you for your attention to this matter.
