
4FA
4FA Trust API
Score each interaction 0–100 with explainability across biometrics, network intelligence, and behavioral signals.
- • Signals include voiceprint confidence (with consent), deepfake probability, HLR/WhatsApp status, SIP fingerprint, velocity.
- • REST in, webhooks out. Trigger inline step-ups: knowledge questions, call transfer, or OTP to a verified channel.
- • Privacy-first: consent gates for biometrics, short retention windows, audit logs, and non-biometric fallback.


