Give the Detective modified spy stickers

[Superlagg]

The audio-only part should also pick up various noisy actions as well, like moving things into and out of a backpack. Maybe not saying exactly what it is, something like "You hear someone putting something sharp into a bag. It clangs against something metallic." Could be the guy you're spying on, could be some nearby dork juggling screwdrivers into a fanny pack.