Leather bound booklet with twenty (20) embedded incident tags
Each "page" has 10 incident tags, 5 per side.

The pages can be removed from the booklet and carried in a pocket.
Change them to whatever you need them to say.
When the guard finds something amiss at the checkpoint, he records this incident.
This incident shows up in the reports, associated with that time, guard, and checkpoint.

Dimensions:
Entire booklet, closed: 
3.75" wide, 1" thick, 6.25" tall
Individual 10 incident page:
3.25" wide, 1/8" thick, 5.25" tall 
           - easily fits in a shirt pocket, with room to spare.