Tutorials
6 min readNovember 25, 2024

Phone Verification for E-commerce: Best Practices

Phone verification uses OTP (One-Time Password) to confirm customer identity before accepting Cash on Delivery orders, significantly reducing fake orders and RTO rates.

E
Ecom Corp Team
E-commerce Experts
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Why Phone Verification Matters

In COD markets, phone verification is your first line of defense against:

  • Fake orders with invalid numbers
  • Prank orders from competitors
  • Fraudulent bulk orders
  • Types of Phone Verification

    #

    SMS OTP

  • Universal compatibility
  • Works on all phones
  • Higher delivery rates
  • Cost: ₹0.15-0.25 per message
  • #

    WhatsApp OTP

  • Higher open rates (98%+)
  • Rich message formatting
  • Lower cost at scale
  • Better user experience
  • Implementation Best Practices

    #

    Timing

  • Trigger OTP after checkout form submission
  • Set 60-second resend cooldown
  • Allow 3 OTP attempts before blocking
  • #

    UX Considerations

  • Auto-read OTP on Android devices
  • Clear error messages
  • Easy number correction option
  • Fallback to SMS if WhatsApp fails
  • Measuring Success

    Track these metrics:

  • OTP delivery rate
  • Verification completion rate
  • Impact on conversion
  • RTO reduction