The IM18+ system uses the browser's postMessage API for secure cross-origin communication between partner sites and the verification service.
{
"verified": boolean,
"source": "im18plus",
"timestamp": number,
"expires": number
}
GET /api/check-anonymous.php
Primary
Anonymous verification check via iframe embedding
{verified: true, source: "im18plus", timestamp: 1704067200, expires: 1706659200}
{verified: false, source: "im18plus", verification_url: "https://verify.im18.app/verify.php"}
GET /api/ip.php?ip=x.x.x.x
Geolocation
IP-based country detection for compliance
{
"success": true,
"ip": "8.8.8.8",
"country_code": "US",
"country_name": "United States",
"continent": "North America",
"is_eu": false,
"method": "best_in_class_detection"
}
// Basic iframe integration
const iframe = document.createElement('iframe');
iframe.src = 'https://verify.im18.app/api/check-anonymous.php';
iframe.style.display = 'none';
document.body.appendChild(iframe);
// Listen for verification response
window.addEventListener('message', function(event) {
// Verify origin for security
if (event.origin !== 'https://verify.im18.app') return;
const data = event.data;
if (data.source === 'im18plus') {
if (data.verified === true) {
showAdultContent();
console.log('User verified until:', new Date(data.expires * 1000));
} else {
showVerificationPrompt(data.verification_url);
}
}
});
function showVerificationPrompt(url) {
// Open verification in popup
const popup = window.open(url, 'verification', 'width=600,height=400');
// Listen for verification completion
const checkClosed = setInterval(() => {
if (popup.closed) {
clearInterval(checkClosed);
location.reload(); // Refresh to re-check status
}
}, 1000);
}<?php
// Server-side verification check
function checkAgeVerification() {
return isset($_COOKIE['age_verified']) && $_COOKIE['age_verified'] === 'true';
}
// Usage in content pages
if (!checkAgeVerification()) {
// Show verification interface
include 'verification-required.php';
exit;
}
// Show adult content
include 'adult-content.php';
?>// Client-side IP detection
async function checkUserLocation() {
try {
// Get user's IP (using external service or server-side detection)
const response = await fetch('https://verify.im18.app/api/ip.php?ip=auto');
const data = await response.json();
if (data.success) {
console.log('User location:', data.country_name);
// Apply country-specific rules
if (data.is_eu) {
// Enhanced privacy controls for EU users
enableGDPRCompliance();
}
if (data.country_code === 'DE') {
// German-specific age verification requirements
setMinimumAge(18);
}
}
} catch (error) {
console.log('Location detection failed:', error);
}
}