Analyzing riders' power data could be cycling's new weapon in the fight against doping, but it's a controversial move. While the International Testing Agency (ITA) believes it can detect signs of cheating, some riders and experts are skeptical. The ITA's feasibility study aims to identify unusual spikes in power data, potentially indicating the use of prohibited substances. This approach mirrors the athlete's biological passport (ABP), which has led to sanctions across various sports. However, critics argue that power data alone is insufficient, as it doesn't account for training schedules, health, and power meter inaccuracies. The ITA's head, Olivier Banuls, acknowledges these concerns but emphasizes the project's potential to monitor athletes and inform anti-doping strategies. Despite opposition, the ITA and UCI may mandate the power data passport project, raising questions about the future of anti-doping in cycling.