Retenal scanning at Jack's?

I know I should change my eating habits but I grab a sandwich on the way to work at Jack in the Box.So the clerk asks me if my order is correct on the screen.Well the sceen was not working at all.A week later she asks me again"Is the order correct on the screen?"forcing me to turn my gaze towards the monitor.
I tell her the screen is broken and get a really creepy feeling theres more to this.I questioned her about this and she claimed its policy.
I have read that one big drugstore chain has more satilite tech. than anyone on the planet.
So whats up the purina corperation?Think they are spying?Soul snatching?
Have I gone paranoid?