Top Hat lets faculty poll students who respond using their own device (BYOD). An integration between Top Hat and ELMS-Canvas allows faculty to create course roster lists based on their course enrollments and import polling session data directly into their ELMS-Canvas Gradebook.
Top Hat polling options include cell phone, tablet or laptop interfaces.
Students can purchase Top Hat subscriptions by the semester, year, or academic career.
Subscriptions: https://support.tophat.com/article/Student-Creating-Your-Account
For additional information, refer to the articles below.