Callsign

Callsign is a digital identity and fraud prevention platform that uses behavioral biometrics, device intelligence, and AI to authenticate users and detect fraud across web, mobile, and physical interactions. The platform passively analyzes thousands of behavioral data points—including typing dynamics, device signals, and interaction patterns—to confirm genuine identity without disrupting the user experience. Callsign serves banks, telecoms, and enterprises seeking to eliminate fraud while maintaining frictionless customer journeys. Headquartered in London with offices in Manchester, Abu Dhabi, and the United States, it holds ISO/IEC 27001 and SOC certifications.