There are two categories: Passive Braking and Active Braking.
An Active (applied manually by hand) Brake is one that must be actuated by the rider. A Passive, or Automatic Brake engages without the action of the rider. The Manual Brake gives the riders more control and an option to stop in a specific place on the cable or on a platform at the very end. The Automatic Brake is considered a better fit for younger riders who may not have the skill to brake manually. In either case, use a stop block as a no-pass point mounted directly to the cable.