Re:The Old Tape Recorder (Score 1)

In my experience, the clickers give an unfair advantage to people with more friends in the class. Since professors usually use it to mandate attendance (making it worth some portion of the grade), a group of friends who take turns bringing each other's clickers to class (it happens all the time) can get all the attendance points without going to class as often. And they're slow to register with everyone trying to click at once, so in a class of 100, it takes more than 5 minutes for everyone to be able to answer one question with them. And the devices are expensive, and some of the companies also charge you for each semester that you use them.