This document describes a Joomla Virtuemart OTP Verification System add-on that allows online stores to validate customer carts and checkouts through one-time passcodes (OTPs) sent via SMS to the customer's phone number. The add-on uses Twilio APIs to send OTPs and validate customers to ensure orders come from genuine customers. It supports guest users, payment validation, and is easy for admins to configure expiration times and SMS templates. The document provides information on the add-on's features and configuration and asks customers to submit tickets for any issues.