I wonder how pickpocket-safe they are because the lower placement would allow someone to reach my pockets without entering my field of view. I mean back pockets

I wonder how pickpocket-safe they are because the lower placement would allow someone to reach my pockets without entering my field of view. I mean back pockets and the side pockets of cargo pants also aren't safe, but those trousers usually have the regular side pockets as a safe alternative for phone & money.