WebAssembly & Biometrics: Securing the Future of Online Identity

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WebAssembly is presented as a portable, high-performance technology that enables biometric authentication and liveness detection to run directly in web browsers rather than relying primarily on server-side processing. Its sandboxed execution environment can isolate sensitive operations and reduce exposure of biometric data, while its compiled format can perform tasks such as facial recognition, fingerprint matching, voice analysis, and real-time video analysis faster than JavaScript. By processing webcam or microphone inputs locally and transmitting only an authentication result to a server, a Wasm-based pipeline aims to reduce latency, improve privacy, and strengthen defenses against spoofing attempts involving photos, videos, deepfakes, or synthetic identities. Didit states that it uses this approach to offer developers biometric verification tools with faster results, enhanced security, more advanced liveness checks, and broad compatibility across major modern browsers.

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