Rotor movement in games like roulette is analyzed using high-speed cameras, sensors, and motion tracking technology. These tools capture the rotor's speed, rotation, and deceleration to ensure consistency and fairness. By tracking the rotor's movement, casinos can identify any irregularities or mechanical issues that might affect the randomness of the game. Advanced software then processes this data to detect patterns or variations that could suggest bias or malfunction, ensuring the integrity of the game.