This one is ridiculously easy. At the beginning of the game, you're tasked with finding the maintenance jack and you'll find it on the body of Zachary Watson (there's a recording next to him where he identifies himself by name). His ID tag is right by his feet.
It's virtually impossible to proceed through the game without getting the maintenance jack, so picking up Zachary's ID tag is super easy. Even if you miss it, other ID tags are a dime a dozen around the rest of the station. As soon as you pick one up; boom, achievement unlocked!
For a complete list of all the ID tags, refer to the guide for The Taken achievement: