I teach at a summer camp once that had custom web app for roll such that it displayed one name at a time to call out and to mark it as present you had to type their given name in a box, otherwise click next with empty input for absent
If I was faced with that, I would switch to paper. Somebody can type it in later.
Also I have no mental imagery of summer camp with networking much less internet. I can't comprehend dropping my kids off at a retail storefront or a church as "summer camp".
