I should probably declare an interest here – I happen to know the band’s drummer, Josh (it’s his grandfather who appears in the video). But they wouldn’t be selected for the hallowed Songs About Security spot if I didn’t like the song, which I do.
For our purposes, I’m saying the tune is about one of the crucial aspects of video surveillance – locating lost people and objects, finding people in a crowd. What was lost is now found, etc etc.
Or something like that. Enjoy the song.