Secure your SMS OTP
with a typing challenge

How it works

• Your system sends the usual SMS, but with a secure link instead of a naked code.
• The user types 2 words. If the typing pattern matches, the OTP is revealed.
• The user enters the OTP as usual. Same flow, stronger assurance.

What you get

• Lower fraud from SIM swap, device theft, and more.
• Familiar UX, no app to install.
• IAM-friendly integration, full pilot in days.

Who needs it

• Banks & fintechs: Still rely massively on SMS but vulnerable.
• IAM platforms: Need stronger second factors without changing user flows.
• Enterprises: Need secure fallback MFA without requiring apps on personal phones.

Why use SMS+

• Market demand - SMS OTP is still #1 authentication factor.
• SMS OTP is vulnerable to SIM swap, phone theft, MITM, etc.
• Works on any smartphone, in browser, no apps required.
• If deep-integrated, no extra steps vs. standard SMS OTP.
• Compliance with PCI DSS 4.0, NIST SP 800-63B 4 (SMS OTP is restricted unless risk-mitigated), and other identity guidelines asking for plain SMS OTP to be avoided or properly secured.

Performance

• Accurate on mobile with as few as 2 words, thanks to TypingDNA’s patented technology, using typing biometrics and motion sensor data.