A: If you want to catch a thief, you have to think like a thief. We'll put some cash by the copy machine.
B: But then someone will take it!
A: Exactly! That's the point - someone will take the cash and the security camera will record everything. Then we'll have our thief!

"именно это я и имею в виду" - еще один вариант

Perfect 👌🏼 thank you!