Video Phone

A telecommunications device that enables real-time video and audio communication between two or more parties. For Deaf and hard of hearing people, video phones are essential communication tools that allow conversation in sign language over distance, providing functional equivalence to voice telephone calls for hearing people. Video phones for sign language communication require sufficient frame rate, resolution, and low latency to preserve the intelligibility of signs, facial expressions, and other visual linguistic features. Modern video phone technology has largely migrated from dedicated hardware devices to software applications on smartphones, tablets, and computers, though the underlying requirements for sign language video quality remain critical.