expiringkey

noun
UK /ɪkˈspaɪərɪŋ kiː/
US /ɪkˈspaɪrɪŋ kiː/

A key that stops working after a certain time.

The app sent me an expiringkey that I had to use within ten minutes.


OTHER MEANINGS

2. A digital code that becomes invalid after a set period for security.

Use the expiringkey to open the secure file before it resets.

3. A key that is automatically deleted when its timer runs out.

The system generated an expiringkey for the guest account.

4. A temporary pass that grants access only for a short window.

The expiringkey let the visitor into the building for one hour.