👉 A fingerpost, also known as a "hand post" or "hand post system," is a device used in many countries to mark the boundaries of land. It consists of three posts, one on each side of a river or other waterway, with the third post marked by a sign indicating its position. The fingerposts are typically placed at strategic points along the waterway, either close to the edge of the riverbank or near the shore, to help guide boats and travelers through the water