<p>If I register my iClicker with my name, how long does the registration last and I need to re-register it again?</p>
<p>it expires at the end of a given semester, so you need to re-register for every new semester.</p>
<p>just a general tip – the ID number rubbed off my clicker probably two years ago at this point, but I can always go back and find my clicker number by searching “iclicker” in my cmail account. the ID number that you register is sent in an email with that text included.</p>