that if you enter the codes of the terminals in Halo Anniversary on Halo Waypoint
you earn credits for it
sry if old
Halo Reach: How To Get 100,00 Credits In 5 Min!!! (LEGIT!!!)
Yup, you also unlock an 11th Terminal for entering all 10, only viewable on Waypoint on Console or the Waypoint site.
Somewhat old but may be new to some people. Thanks for the post though ! Quite exciting when you first uncover this mysterious activity on waypoint lol