“Angle sensitivity” in the context of a close-up magic trick refers to the degree to which a magic trick or sleight of hand relies on specific viewing angles to remain deceptive. Highly angle-sensitive tricks can be performed effectively only when the audience is positioned within a narrow range of sightlines, as exposure from other angles may reveal the method or gimmick. This angle sensitivity often arises due to concealed props, hidden movements, or specific hand positions that are visible from certain perspectives. Angle sensitivity contrasts with tricks that are “angle-proof,” which can be performed in nearly any setting without risk of exposure. Managing angle sensitivity is a critical skill for close-up magicians, requiring precise audience positioning, misdirection, and practice to ensure the illusion remains intact. Some sleights might require the magician to tilt their hands slightly or keep objects close to their body to obscure critical actions from unintended viewpoints.