“The Lockpick skill is used to open locked doors and containers.”

Every 25 points in this skill allows you to pick a more difficult lock. It also increases your chance to force locks (wee…) There are plenty of locks in the game, so this skill becomes useful simply because of how often you’ll need to use it. It is one of the few skills you should level up quickly (the faster you get it up in ranks, the sooner you’ll be able to pick more difficult locks.) It’s a good candidate for a Tag! skill.