Some types of hookup activities that do not require sign up include meeting someone in person, talking to someone online or through a dating app, and using chat rooms. Meeting someone in person typically involves finding someone you are attracted to at a bar, restaurant, club, or other public place. Talking to someone online or through a dating app can involve sending messages back and forth with no requirement for an account creation process. Using chat rooms may involve simply joining an existing conversation without signing up for any kind of service.