For the past 23 Olympics, Omega has served as the aforementioned timekeeper for the games. Omega's traditional expertise in watchmaking has been superseded by more sophisticated technology, exemplified by the electronic touchpad used for recording swimming finishes. Measuring three feet high, nearly eight feet wide and less than half an inch thick, the pad was introduced in Mexico City in 1968 in response to a controversial decision in 1960. Prior to that point, three timekeepers armed with stopwatches were assigned to each lane. Two-thirds of the pad is submerged in water, with a separate pad in each lane. The system reacts to the slightest touch, but won't trigger based on the water movement in the pool.