id have to agree w the guy from quebec . it does take quite a bit of time(for what ur apparantely
doing)to do dirty work so i would stay away from just handing it out from a pocket right after. THEY
WILL THINK U HAVE A POCKET FULL OF TIMES.i use a single empty envelope that has a 'prediction'
inside. its out in full view the entire time. i use a card in box move to retrieve it from 'inside'
the envelope.
also the pics aren't perfect and after a few min or a few hrs they may connect
the dots. give it to them, let them check it out, rub it, whatever, then toss in ur pocket or the
trash.(if your neat u wont have to).