Star Trek: The Next Generation
The Starfleet officers and members in Star Trek: The Next Generation and most 24th century Star Trek based shows had to wear a jumpsuit, (except for children and some parents on board the Enterprise) with a communicator badge (also known as a combadge) shaped in the form of an oval, with the Starfleet logo over top of it on the upper left side. The uniform colors would also represent your position.