Turns out he handed a full big A4 print
There was no way to sneak it out
In order to have no phone outline from my pocket in case he tells me to put it on the desk I simply went to the restroom just before and put my bag in one stall
When I came back it disappeared and somebody nice brought it to lost and found
I feel guilty for abusing good will to have a better chance cheating, but maybe the opportunity to do a good deed made that persons day happier and cemented their will to do more good

Besides it appears I nailed it without cheating

Bought 2 liters of vodka, 0.5 of 96% spirit and 12 beers, time to celebrate!!!