Obviously the only answer is a fleet of drones hovering over the field at all times with cameras, radar, heat-sensing technology, and the aforementioned electron microscopes to observe and analyze base contact with scientific precision. WE HAVE THE TECHNOLOGY! Also, all records back to 1876 should be erased because those fuckers were cheating left and right and the numbers they put up can't be trusted. It's a real disgrace that MLB has allowed this to go on for so long.