Manual event attendance process

Hello Mountain Tessitura folk.

My supervisor asked me to see if other orgs were doing manual event attendance, versus using the scanners. Is that a thing? 

I know the system was designed to be used with scanners, but we were wondering if there are in fact cases where a printed list and good old-fashioned checking people in was preferred. If you do manually pull an attendance list (and manually enter your attendees after the fact), can I ask what type of events you do that for? Why does a manual process work for you, in that case?

Clearly you don't want to be spending a whole day checking hundreds of people in when you could spend one hour equipped with a scanner or two and check in the same number of people.

I'm all ears...