> I don't really get why it's specifically dystopian that you are recorded by a camera while you stand in line to hand over your government issued photo ID to a government agent with pretty broad discretion to make your day pretty awful.
Because automated iris-at-a-distance systems that can track and identify non-cooperative human targets scale a lot differently than tetchy border guards. Pervasive CCTV is one thing if it's mostly not watched (and only used to piece together what happened after incidents), pervasive facial/iris-recognition that is watched by computers 24/7 and tracks every single human's movements is a whole other thing. Also frankly, given you recognise the ability of customs/border/immigration personnel to make your day awful, why do you seem fine giving those people even more power and methods to pervasively surveil and track people?
> I'm pretty sure those cameras at Gatwick are supposed to track how long the waiting time is
Even per publicly-available information, this is flagrantly false. Queue management does not require enrolment of the passenger's face/iris data with their boarding pass, as indeed happens at Gatwick. This is explicitly for tracking passengers through every area of the airport:
http://www.professionalsecurity.co.uk/news/press-releases/mf...
http://www.planetbiometrics.com/article-details/i/1850/desc/...