I've been on the receiving side of such pranks in tradeshows, it's part of the interaction. You put up gear for the general public to mess with, you have to calculate this in.
Firato, the annual CAD/CAM show for the metal working industry, The Hannover Messe (which used to be the largest IT show in Europe) the building equipment trade shows. Put enough gear in front of enough people (especially nerds) and pranks will happen.
As far as I can see this was a harmless prank because a powercycle fixed the issue. If he had reprogrammed it to the point that it was bricked for the duration of the trade show that would be a different matter.
Firato, the annual CAD/CAM show for the metal working industry, The Hannover Messe (which used to be the largest IT show in Europe) the building equipment trade shows. Put enough gear in front of enough people (especially nerds) and pranks will happen.
As far as I can see this was a harmless prank because a powercycle fixed the issue. If he had reprogrammed it to the point that it was bricked for the duration of the trade show that would be a different matter.