One of the similarities between them is the technology. They use it like we use it today. They use cameras to make sure people aren't engaging in suspicious activity or illegal crimes. They do whatever they can to catch anyone behaving wrongly so they can punish them and remove them from the society or even worse be vaporized. Today
we use security cameras to watch what people are doing or to look back on them if they committed a crime and they need evidence to back it up.