[rvba]

Does the world championship use any detectors to check if participants arent cheating? Via some communication device, sounds, lights etc. that would tell moves taken from a computer or a set of helpers?

Alternatively someone could put some device inside their body. Are the participants scanned somehow?

[notreallyauser]

There is security beforehand. Not seen specifics on this event, but metal detector arches have been part of it in other events.

The playing hall is, I think, essentially closed after the start of the match.