1. [Home](https://www.g2.com/) 2. ... 3. [Multi-Factor Authentication (MFA) Software](https://www.g2.com/categories/multi-factor-authentication-mfa) 4. [RingCaptcha Discussions](https://www.g2.com/products/ringcaptcha/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_63fff35512cd48064c405145a3b4c553/ringcaptcha.png "Product Avatar Image") ](/products/ringcaptcha/reviews) [ RingCaptcha ](/products/ringcaptcha/reviews) (44)4.6/5 RingCaptcha offers phone 2FA, OTP, SMS, voice API to help companies verify, engage, and retain end-users - 'Real Users, Real Contact'. With RingCaptcha, you integrate once with us and gain access to the best routes for sending OTP or SMS notifications reliably through Twilio, MessageBird, Infobip, Nexmo, etc., RingCaptcha builds additional security and reliability layer on top of all global and regional OTP & SMS providers to mitigate against fraud using machine-learning, and reliably send OTPs and SMS notifications through best routes chosen based-on real-time data, as well as auto-resend through alternative routes to further increase reliability. With our OTP & SMS marketplace, you get the best price with no provider lock-in. Best of all integration is a breeze - just cut-and-paste some code or call our single REST API endpoint. Show More * * * ### 83.0 Nps Score Already have RingCaptcha? ### All RingCaptcha Discussions Search Most CommentedMost HelpfulPinned by G2Newest All DiscussionsDiscussions with CommentsPinned by G2Discussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Pinned by G2 Newest Filter by All Discussions Discussions with Comments Pinned by G2 Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • almost 3 years ago More Options - [ # What is RingCaptcha used for? ](/discussions/what-is-ringcaptcha-used-for) What is RingCaptcha used for? [ Communication Platform as a Service (cPaaS) Platforms ](https://www.g2.com/tags/communication-platform-as-a-service-cpaas-platforms)[ Multi-Factor Authentication (MFA) Software ](https://www.g2.com/tags/multi-factor-authentication-mfa-software)[ Customer Identity and Access Management (CIAM) Software ](https://www.g2.com/tags/customer-identity-and-access-management-ciam-software) * * * \<0\>0\>Upvotes * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+RingCaptcha+questions+and+get+answers+from+expert+users+in+our+RingCaptcha+Discussions+section.&title=RingCaptcha+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fringcaptcha%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=RingCaptcha+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fringcaptcha%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fringcaptcha%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=RingCaptcha+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fringcaptcha%2Fdiscuss%0aAsk+RingCaptcha+questions+and+get+answers+from+expert+users+in+our+RingCaptcha+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=RingCaptcha+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fringcaptcha%2Fdiscuss%0aAsk+RingCaptcha+questions+and+get+answers+from+expert+users+in+our+RingCaptcha+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ## Start a New Software Discussion Have a software question? Get answers from real users and experts [Start A Discussion](/products/ringcaptcha/discussions/new) * * * ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_63fff35512cd48064c405145a3b4c553/ringcaptcha.png "Product Avatar Image") ### Have you used RingCaptcha before? Answer a few questions to help the RingCaptcha community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/authorize?form=signup&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fringcaptcha%2Fdiscuss%3Fsmall_ask%3Dringcaptcha) No