Case Study: Large Lecture.

"I wanted to take attendance for my astronomy class of over 100 people. A paper sign-in sheet or calling names one-by-one were not options. So, I decided to give Youhere a try."

The Pre-Class Ritual

In my class, I usually start out by writing the topic schedule on the board. Now, at the very top, I also write "Check-in please." While students file into their seats, it's the perfect time for them to handle this quick task.

Precision & Humor

I set a map-based check-in pin right over my building with a 15-minute window. When I call class to order, I orally ask them to "check-in please." Many have already done it. Students often joke about the phone's location precision: "Ooo... I was only 2.4 meters away!"

Done Before You Start

How long does it take? I really don't know, because when I'm ready to start class, the check-ins are already done. Everyone does it at once, which makes "how long it takes" hard to assess—it's essentially instantaneous for me.

Handling Exceptions

I always bring a paper backup for students with dead batteries or forgotten phones. They just jot their name down as they leave, and I manually check them in later. Access to their own records means they can always verify their own status.