jellyfish
How to track iframes with Google Tag Manager
這篇建議用postMessage
charmaine-kruger
Tracking in an iFrame using Google Tag Manager
這篇也建議用postMessage
qaror
Track User Interactions in Iframe with Google Tag Manager
這篇也說用postMessage
MeasureSchool 影片
How to track iFrames with Google Tag Manager
這篇也說用postMessage，而且他用不同的GTM帳號又嵌在iframe裡
他用了一個trigger，連結他html裡的form的id
MeasureSchool
Tracking Iframes: How to Track Conversions in Iframes with Google Tag Manager
還沒看
MeasureLab
GTM Solutions Corner #2: How to track clicks on an iframe using GTM
待閱
jsndesign
iFrame Video Interactions Tracking with jQuery and Google Tag Manager
待閱