"in someone's pocket" is a correct and usable phrase in written English.
It is typically used figuratively to mean that someone has something in his or her possession. For example, "I think I left my keys in my brother's pocket."
— DAVID R. JONES "All politicians are in someone's pocket".
Everyone else is mentally deficient, or in someone's pocket".
The police use such specious justifications as "furtive movements" or an alleged "bulge" in someone's pocket as the basis for stopping people.
I don't want to let go of my entire afternoon only to later pay a "fine" that will end up in someone's pocket.
A lower-spec version (up to 400x magnification) costs less than 60 cents.The whole device weighs less than 10 grams, can fit in someone's pocket, requires no external power and takes standard microscope slides.
Mr. Catsimatidis would get around the stop-and-frisk problem with a technology that doesn't exist: a portable device that would detect a gun in someone's pocket from afar.
If just one percent of education spending were diverted to private profit, it would mean $5 billion a year in someone's pockets.
You cannot just stuff money into someone's pocket.
It's because Turner is a cold-blooded bargainer who could find a million dollars in someone's back pocket that the person didn't know he had.
Kuribara and his two assistants banter with the diners along the bar, the menu looks as if it had been through a wash cycle folded up in someone's back pocket, and a notice at the entrance tells ignorant Westerners not to rub their chopsticks together or dunk wasabi in the soy sauce.
NASA's engineers would famously rely on the speed of their fingers on the slide-rule when re-calculating trajectories for the Apollo missions, and the thought of a computer in the average family home, let alone in someone's back pocket, seemed suited to science fiction.
