Clickers are commonly used in conjunction with dog agility training. The clickers are small plastic devices that when pressed on emit a clicking noise. When used properly, the sound can be associated with certain canine behaviors.
For instance, if you want your dog to perform a certain action during dog agility training, give the command and have your dog perform the action. If your dog completes the agility component correctly, press the clicker and give your dog a treat. Repeat the process until your dog has a firm command of the course. Gradually take away clicks and treats until your dog no longer needs the incentives.