[Anderkent]

I'm european, and hold my wallet in the back pocket or in my jacket. I just take it out and put it on the table when sitting.

[emiliobumachar]

I simply do not buy pants which don't come with extra pockets over the thighs. They are really hard to find, but they Solve The Problem. (I'm Brazilian, but atypical in this habit)

[rmc]

Wait, there are trousers which don't come with pockets in the front/over the thighs?!

[emiliobumachar]

I meant extra pockets, also in the front, over the lower thighs, for a total of 6 pockets, 4 of which in the front.

Unlike the upper pockets, those extra two are in an area which you don't squeeze when sitting.