Creating a digital lock for a game in PowerPoint

I created a small Escape Room activity for one of my workshop and wants to end with a digital lock that the participants need to unlock with a numerical code. I don't want to create the lock in Google Forms - I want everything to stay in PowerPoint. Any suggestions or recommendations, please?
Thanks.

If you're looking for a PowerPoint-based passcode system that requires a 4-digit code to unlock, my old game Cursor Adventure has a working example (no macros/VBA).

The gist is that you have multiple slides with a keypad on them. Entering the correct digits traverses you towards the "correct" keypad slides, while entering any incorrect digit takes you to the "incorrect" keypad slides.