Submitting the Device Data Collection Iframe

Add JavaScript to invoke the iframe form POST. Place the JavaScript after the closing
</body>
 element as shown in this example. The JavaScript invokes the iframe form POST automatically when the window loads. You must submit it before requesting the Check Enrollment service.
JavaScript to Invoke the Iframe Form POST
 
 <script>
window.onload = function() { 
var cardinalCollectionForm = document.querySelector('#cardinal_collection_form'); 
if(cardinalCollectionForm) // form exists 
cardinalCollectionForm.submit();
}
</script>