Brand: Cassida
Function: Detects counterfeit bills and documents using UV light, and often has other detection methods like magnetic (MG) or infrared (IR) sensors depending on the specific model.
Compatibility: It is suitable for use with various currencies that incorporate UV security features, including the Ugandan Shilling banknotes shown in the image.
How it works: Authentic banknotes are printed with special inks and embedded fibers or threads that fluoresce (glow) under ultraviolet light. Counterfeit bills typically lack these specific features or use inferior imitations, which either do not glow or glow unnaturally.