What technique involves applying pressure to the subject's hand on the index knuckle?

The technique that involves applying pressure to the subject's hand on the index knuckle is the Transport Wrist Lock. This technique is designed to control and guide an individual by leveraging the acute pain associated with pressure on the knuckle joint. In physical confrontation or restraint situations, this method provides a tactical advantage to the person applying the technique, as it can effectively manipulate the subject's movement, enforce compliance, and provide a means of movement for escorting someone without causing excessive harm.

The Transport Wrist Lock specifically targets the index knuckle, leading to discomfort and potential pain that can deter the subject from resisting. This technique is particularly useful in law enforcement and self-defense scenarios, allowing for safe and controlled apprehension of individuals. Overall, its focus on joint manipulation and pressure application makes it an effective method for gaining control over a subject in various situations.