IceBear
Explorer
Keith said:"The character generally must be within 10 feet of the object or surface to be searched."
Well, yes, I wouldn't let someone find a trap from more than 10 feet away...what is it, a sign saying "trap here"?
No, but if you remember Raiders of the Lost Ark, Indy notices scuff marks on the stone and then sees the holes the darts shoot out of. Yes, he was closer than 10ft, but he also wasn't in that "square" or actually touch anything in it.
I can forsee circumstances where you might have to actually search the square that the trap is in to find it, but discolorations, scrapes, and holes/triggering mechanisms might be noticeable from a distance.
As was said, if they want to Take 20 on every 5ft square then they're wasting a lot of time that gives the dungeon denizens time to prepare, wandering monsters time to find them, the evil wizard time to finish his world ending spell, the evil priest time to complete his sacrifice, etc. Time should be a factor in the adventure and Taking 20 all the time will affect this.
IceBear