Skill Feat - Thieves Tools

This is a feat that your DM may allow you to take after you have worked for it through roleplaying efforts, usually by being trained by someone already proficient in the skill over a period of time in game.  This feat will award you proficiency in that skill, and the effort to attain this skill should be noted in your backstory.   To qualify for this feat, you must have attained at least 4 levels in one or more classes. You must also have spent time in game, or during "downtime," under the tutelage of someone proficient with these tools.

You have become proficient in thieves tools.  You understand the basics of using these tools to trip locks and to disable traps that involve intricate locking mechanisms.