individualkey
nounUK /ˌɪndɪˈvɪdʒuəl kiː/
US /ˌɪndəˈvɪdʒuəl kiː/
A special key that belongs to just one person.
She kept her individualkey in her pocket so no one else could open her locker.
OTHER MEANINGS
2. A key in a computer system that is given to only one user.
Each student got an individualkey to log in to the school computer.
3. A single key on a piano or keyboard that makes one note.
He pressed an individualkey to play a soft note.
4. A key that opens only one specific lock, not many.
The janitor's master key opens every door, but this individualkey opens only the art room.