1. facebook.com/pages/Invisible-Shield-by-ZAGG/49243704543 Invisible Shield Facebook page that has daily discount codes
2. retailmenot.com/view/shieldzone.com Retailmenot.com Shieldzone (helpful voting system that confirms if codes are active)
3. merchantcircle.com/blogs/Invisible.Shield.801-263-0699 Invisible Shield Merchant Circle web site (good collection of codes)