Beyond Identity RealityCheck vs Disposable Email Domains: Side-by-Side Comparison (2026)

Beyond Identity RealityCheck

Security teams defending against deepfake and AI-impersonation attacks in video conferencing will find RealityCheck's device-bound passkey model genuinely difficult to bypass, since authentication is cryptographically tied to the endpoint itself rather than just the user account. The tool covers NIST PR.AA and DE.CM strongly, meaning it locks down access at the authentication layer while maintaining continuous visibility into device posture and participant risk signals. Skip this if your organization rarely uses video calls for sensitive transactions or if you need passwordless auth that works across contractor devices you don't control; RealityCheck's strength is enforcing device compliance alongside identity verification, which creates friction for unmanaged endpoints.

Disposable Email Domains

Teams running signup flows or fraud prevention systems that need to block disposable email registrations will find value in Disposable Email Domains because it's maintained, free, and covers 1,363 known domains across major providers. The list updates regularly on GitHub and integrates into most identity verification pipelines with minimal friction. Skip this if you're looking for behavioral signals or account takeover detection; this tool does one thing,block throwaway addresses,and doesn't pretend to do more.