[jancsika]

> If a new regulation insisted that on entering a hotel room, a member of the hotel staff had to use a blacklight and you needed to explicitly approve every illuminated mark larger than a quarter, then you would be annoyed at that regulation.

This analogy doesn't work because a) the vast majority of illuminated marks aren't harmful, b) the ones that are harmful aren't revealed by a blacklight, and c) you can take a shower after you leave to deal with the gross ones.

If, however, the light revealed signs of bed bugs we would be in the right ballpark.

Because:

a) everybody should want to minimize how much they deal with bedbugs

b) if you regularly sleep in places that have bedbugs you risk bringing bedbugs along with you to the other places you go

c) because of education and time constraints, people typically do not manually inspect each and every place in a hotel room that bed bugs could be. So if hotel staff could force the user to click a dialog that says, "This hotel room uses bedbugs for the following purposes..." that would be extremely useful for public health and sanity.