Terminal To Hack Fallout 76: In Fallout 76, terminals can be hacked, as in previous games. In Fallout 76, the hacking terminal mechanics are a bit different from previous games, because you’d need some perk cards to be able to do that. There is a particular level of difficulty in Fallout 76 per locked computer terminal. It starts at level 0 and goes up to level 3. Tier 0 terminals can still be hacked, regardless of your perk cards.
Any level terminal above zero, however, would demand that you have hacking advantages. In Fallout 76, you can unlock three hacking perk cards: Hacker, Expert Hacker, and Master Hacker.
You would need to have all three cards to hack these computer terminals to hack a level 3 terminal since they give your character a +1 hacking skill and they stack on top of each other.