ID card after graduation?

<p>Question:</p>

<p>After graduation, what happens to Student ID cards? Specific answers would be appreciated; i.e. on what day do they have to be returned/when do they stop working if not returned/etc/etc.</p>

<p>(I am a current undergrad student at Cornell.)</p>

<p>You get to keep them. Technically you paid for them. I still have mine.</p>

<p>They don’t tell you when they stop working but they will.</p>