rotatingcode

noun
UK /rəʊˈteɪtɪŋ kəʊd/
US /ˈroʊteɪtɪŋ koʊd/

A rotating code is a secret password that changes again and again so nobody can guess it.

The spy's phone showed a new rotating code every thirty seconds.


OTHER MEANINGS

2. A code that spins or turns around a fixed point, like a dial on a lock.

The rotating code on the safe clicked as she turned the dial.

3. A set of rules that take turns in order, one after another.

The game used a rotating code so each player got a fair turn.

4. A programming trick where a value's bits are shifted in a circle.

The engineer used a rotating code to scramble the data bits.