How to add a "viewed" icon to pages that are visited I have a Drupal 7 site where I have a bunch of videos and I could use a little help with understanding the best way to show a small icon next to my video links after a visitor has viewed it. Is there a way to do this if they are anonymous visitors? My site does not have user accounts. Also, each of my videos are on a separate page and have a unique url.

I've looked briefly into the Flag Module, but I'm not sure if this work work as I don't want viewers to click on anything. I only to track their browsing.

Any help in the right direction would be much appreciated!
In my opinion using a cookie could be a nice way to accomplish that need. (Maybe even the only way).   A quick search came up with the user_cookie_save function >> https://api.drupal.org/api/drupal/modules!user!user.module/function/user_cookie_save/7

Use it to save the cookie with the video URL or another identifier and read that cookie when loading the page and set the viewed flag.