Not sure, given all the debate over tickets where this sits but it probably deserves its own thread. The club is currently recruiting for a Ticketing Compliance Manager - full details can be found here
https://www.linkedin.com/jobs/view/3838432700
The interesting bit is this:
The successful applicant will actively investigate ticket re-sale misuse for home and away matches and fraud along with all aspects of ticket touting to ensure that the Club’s terms and conditions are adhered to and that crimes under the Serious and Organised Crime Act 2005 and the Criminal Justice and Public Order Act 1994.are minimised.
You will develop a comprehensive policy to ensure a comprehensive and sustainable model for the identification, investigation and prevention of ticket sale misuse and touting.
You'll use data analytics to identify trends and patterns of ticket purchases alongside pro-active investigation into ticket re-sale through all unauthorised channels including online, social and face to face.
If they started investigating in house that would be a good starting point!