The dual-video spectral comparator Regula 4308 is now in operation at Quito International Airport. Suitable for high-traffic airports, the spectral comparator supports the full spectrum of light sources and optical filters. It has an up to 320x optical zoom and up to 140,000ppi resolution. Meanwhile, the Regula 4306 at Guayaquil International Airport is a space-saving device with an 8MP high-resolution camera and in excess of 40 LED light sources for analyzing document authenticity.