EduCue Student responder
Melissa Miles used this (for the first time) in her presentation on the AAS computing Liaison meeting. It was a laughter. 
The ten digit transmitter provides maximum flexibility - not only can the transmitter be used for 30 choices (using the H & L buttons) but future capability will allow multi digit numerical answers.
Large lecture halls are no problem - we don’t know if there is an upper limit but we have several customers with 400 seat lecture halls and one as large as 500 seats. Multiple receivers are required, but they are easy to install and we will advise on recommended layouts.
Designed by teachers for use by teachers - We are not pushing exotic software that tries to lock in administrative reporting or student evaluations. We provide a simple interface that allows maximum flexibility for the instructor to teach in the manner they choose.
It is affordable - the cost per user is comparable to that of textbooks.