The European Union's Artificial Intelligence Act (EU AI Act) represents a pioneering legislative framework aimed at regulating AI technologies within the EU. One of the critical areas addressed by the Act is the use of biometric technologies, which have significant implications for privacy, security, and fundamental rights. This piece provides a detailed analysis of how biometrics-related AI systems and models are governed under the EU AI Act, exploring particularly the distinctions between prohibited practices outlined in Article 5 and high-risk systems as specified in Annex III through the reference of Article 6, among others.