RingCaptcha

RingCaptcha Inc., a San-Francisco born phone identity platform, i.e., phone verification through SMS/voice/missed-call one-Time-PIN (OTP) that helps onboard ‘Real Users, Real Contact’ to help build a trustworthy user base and ensure timely communication; both of which is critical for economy sharing, marketplaces, fintech, cryptocurrency, e-commerce and online reservation businesses. RingCaptcha’s unique technology makes it easy to use (single API call, or cut-and-paste widget), yet secure (mitigate Sybil, resource exhaustion, Denial-of-Service attacks) and reliable (detect and use the best routes for each country/phone carrier for OTP delivery, sends auto-followup through alternative medium (missed-call/SMS/voice), an AI assistant that can place calls and analyze responses and make sales teams more efficient.