Well, simple if you have a tablet with a camera and a photo editor app, that is.
Say you are running a miniature wargame with lots of hidden information in it, like the location of snipers, minefields, ambushes, “hot zones” etc. This can be problematic in the normal “God’s eye view” of a miniature battlefield. I’ve seen various ways of hiding hidden movement in plain sight, or tracking it off the battlefield, with various degrees of success. I’ve tried this recently, and it works perfectly.
Say you have a battlefield laid out, or you are about to.. just one little detail. You ask the defending player– “where are the hidden units?”
Then take a picture of the battlefield using your tablet camera, like so:
Quick like a bunny, switch to a photo editor of some kind that allows fast edits and saves, and where you can use your finger for a stylus.
Then, bring it up in an editor, hand it to the defending player, and have him mark the actual photograph with edits showing where this stuff is on the map. He knows where it will be, but the assaulting player will not.. until he encounters it.
SAVE out and use it as a reference when the action starts.
Sure, that’s absurdly easy. Easy and fast is good when you have people waiting to start playing! Total time elapsed, less than five minutes.
EDIT: LordAshram from the Miniatures Page suggests, and I concur, that you make a picture for each hidden map feature, so you can only depict a single hidden map feature at a time. In the example above, there would be a minefield map, a sniper map, and an ambush map. Easy enough to do– and you wouldn’t have the pain in the neck of showing ONE thing on the photograph and trying to hide the other things with your hand or a piece of paper.