no, even that's pretty easy! if your dog is chipped, they wave the chip reader over the dog while you hold his/her head. but no contact from strangers.
and if the dog has a tattoo, you show the judge by folding the ear back and the judge just looks, or if the tattoo is on the belly, you can hold the dog up and show it or have the dog roll over and show it(ha, easier said than done!). the judge will look but not touch. and i have to be honest, at the last 2 trials i've been at, the club secretary was in charge of making sure it was done so they didn't even bring the judge in on it. which made it even easier because the judge wasn't really paying attention as long as someone was going through the motions.
this is how it works with DVG, at least. USA might have a slightly different approach . . . the BH routine and rules are pretty much the same, but the judges might be stricter about things like tattoo/chip stuff. i've never been to a USA trial. i do know that USA, unlike DVG, requires that a handler who has never done a BH before take a written test--when i heard that, i knew i made the right decision going with DVG!