If you Googled mechanical code locks as someone stated, you'd see that they are not bike locks but instead door locks that are very common on houses/gates in suburbs and cities and commonly used on properties that are for sale. they require no power to function. they could use a number panel that the player could use a cursor on to select and enter a pin or maybe repurpose the hotkeys wheel with numbers instead of fiddling with a bike lock and its combination style lock, could ease of use by select spawn areas and limited spawn rates in comparison to bike locks