Click on the link below for a video about the USGA's GS3 golf ball that was created to measure putting green quality. If you recall, a USGA Agronomist brought the ball to Highlands CC last summer while it was in it's testing phase. This is interesting technology.
"There’s a lot more to a great putting surface than just green speed. With our new GS3 smart ball, superintendents can now objectively measure the smoothness and trueness of their putting greens and gain insight into how maintenance practices impact ball roll."