Tethered capsule is a research area that involves the development and use of small, capsule-like devices that are tethered to a larger structure or vehicle. These capsules are often used in medical procedures, scientific research, or industrial applications. The tether allows for control and manipulation of the capsule's movement, as well as the transfer of data or power between the capsule and the larger structure. Tethered capsules are commonly used in tasks that require precise and controlled movement in confined spaces, such as exploring the human body or inspecting complex machinery.