Callsign

Callsign is a digital identity and authentication platform focused on identifying and verifying users across web, mobile, and physical interactions. The company's core technology centers on behavioral biometrics and AI-driven intelligence to authenticate users and prevent fraud without compromising user experience or privacy. The platform analyzes behavioral signals and user characteristics to establish identity, enabling businesses to distinguish legitimate users from fraudsters. Callsign uses data obfuscation techniques that analyze behaviors rather than individuals directly, positioning the approach as privacy-conscious by design. Data collection is event-based rather than continuous surveillance. Key capabilities of the platform include: - Behavioral biometrics for passive, continuous authentication - Fraud prevention and scam detection, including telco-based scam models - Orchestration of identity decisions in real time - Compliance with privacy regulations Callsign targets financial services and other industries where digital trust, fraud prevention, and secure customer onboarding are critical concerns. The company's technology is designed to integrate into existing digital journeys to reduce friction for legitimate users while blocking fraudulent activity. The company was founded by Zia Hayat, inspired by early internet fraud events dating back to 1994. Callsign emphasizes ethical AI principles, stating that its systems are built to respect user privacy and avoid surveillance-style data collection. The company is headquartered in the United Kingdom.