Naturally, there are even online tutorials available to instruct neophyte hackers on how to hijack your webcam. A sticker is better than a Post-It, which can lose its adhesion and fall off.
Fortunately, WIRED is here with a solution: Cover your camera lens with a sticker. Gaffer tape works nicely, too, but can leave a residue.
Install a copy of IP Webcam on your Android device.
Next, you'll need to install a copy of its software, IP Camera Adapter, on Windows.
It's highly recommended that you plug the phone in while using it and completing these steps.