Watch a video on making a basic team game, watch a video on making a basic interaction, watch a video on making a door (playing animation when interacting).
Then watch a video on a basic puzzle system (pick up 3 balls to open door)
Apply the same concepts to these devices.
I suggest playing an animation on the hacking device too, or changing the texture on the screen to red or orange while hacking and if it succeeds play a light particle electric spark effect.