Surveil is a 7 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 13 points.
You can make 175 anagrams from letters in surveil (eilrsuv).
First recorded in 1965-70; back formation from surveillance
So, the ability to surveil everyone on the planet is almost there, and arguably will be there within a few years.
Then it dawned on him—he could surveil himself for the authorities.