The privacy-first, zero-knowledge age verification solution for modern websites. Verify once, access everywhere with complete user privacy protection.
Zero personal data collection. No names, IDs, or tracking. Just a simple verification flag stored locally.
Complete verification once and access all participating sites instantly. No repeated forms or accounts.
Add age verification to your site with just a few lines of code. Complete API documentation included.
Quick actions for managing your age verification status
IM18+ provides multiple API services for age verification and geolocation compliance.
verify.php
Age verification form with redirect logic
api/check-anonymous.php
PostMessage API for verification checking
api/ip.php
IP geolocation service with best-in-class detection
success.php
Post-verification success page
check.php
Partner site integration include
Add age verification to your site in 2 steps:
<?php require_once 'check.php'; ?>
The include handles verification check, UI display, and redirect logic automatically.
Powered by our best-in-class country detection system for accurate location identification and compliance requirements.
GET /api/ip.php?ip=1.2.3.4
Detailed explanations of how the system works under the hood.
© 2025 IM18+ Age Verification System. Secure, federated, privacy-focused.