How to create a visible barrier that they player can deactivate only by using an specific game object?

Questions & Answers
1

145890-doorbarrier-example.jpg
145890-doorbarrier-example.jpg1465×866 161 KB

Something like that. That can only be deactivated if you get a certain gameobject.

Thank you in advance for your help.

2

You could always create an empty GameObject with a 3D collider, which you then disable upon getting a certain GameObject via a script.