Authsignal

Authsignal 卖的是可以插进任意身份体系的认证层：passkey（FIDO2/WebAuthn）、设备生物识别、WhatsApp 与邮件验证码、App 推送、掌纹识别，都通过同一套 API 接入。它自带无代码规则引擎做风险策略与 step-up 认证，配审计日志、会话管理与数字证件核验，主要场景是防账号接管与无密码改造，不要求替换掉原有的 IdP。 🔗 文档: https://www.authsignal.com/docs

Authsignal sells an authentication layer that drops into whatever identity stack you already run: passkeys on FIDO2/WebAuthn, device biometrics, WhatsApp and email OTP, app push and palm biometrics, all through one API. A no-code rules engine drives risk policies and step-up authentication, with audit trails, session management and digital credential verification attached. The main use cases are account takeover prevention and going passwordless without replacing your IdP. 🔗 Docs: https://www.authsignal.com/docs