Gym Locker numbers

Can we please learn to memorize our locker numbers? Every time I keep finding my locker number changed because someone tried to open it up because they forgot their number and now I have to go ask maintenance to come open it up for me. If you can sit on a machine and phone scroll endlessly am sure you can make a note of your locker number in your phone so you don’t have to open a locker that isn’t yours and inconvenience some else.