Sent TeamMar 8, 2026 / tools / Node.js

How to Implement OTP Verification in Node.js: Complete SMS 2FA Tutorial with Express, Plivo & Redis

Learn how to build secure SMS OTP verification and two-factor authentication in Node.js using Express, Plivo SMS API, and Redis. Complete step-by-step tutorial with production-ready code examples, security best practices, rate limiting, and brute force protection for phone number verification.