Z Raj on Instagram: "Like this content? Follow us @explaining.machines for more content like this ❤️ A currency counting machine works by quickly and accurately counting paper money while detecting counterfeit bills and sorting notes based on denominations. The machine uses sensors such as optical, magnetic, and ultraviolet to scan the currency for features like watermarks, security threads, and ink patterns. These sensors help verify the authenticity of the bills while counting them at high spe