system
Given the following post, respond as if you're commenting on Reddit:
human
[Known Space] I'm an ARM agent, I'm pretty sure a criminal is using a mobile Sinclair time-acceleration field, is there any way I can I actually stop them without hoping I eventually catch them with it turned off?
gpt
Set up a bunch of transmitter and reciever pairs clocked down to the picosecond around the city.  The time acceleration will produce a small but measurable offset.  You can use those measurements yo pinpoint the location of your criminal.  It's similar to accounting for the effects of relativity in GPS satellites.

You can probably hijack existing communication towers to get the job done.