ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,330, issued on Sept. 8.

"Identifying the location of contact between a ball and a bat" was invented by Brian Carr (Cambridge, Mass.) and Hong An (North Andover, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An impact label for use as a baseball training aid includes a deformable layer and an incompressible layer which may include aluminum foil and paper, respectively. The incompressible layer includes voids distributed in a regular pattern. A first side of the incompressible layer is adhered to the deformable layer. A second side of the incompressible layer is formed around the barrel of a baseball bat, e.g., via an adhesive on a base layer. ...