Things You'll Need
Instructions
Put cornstarch in a container with a tight lid.
Apply the cornstarch with a large make-up or blush brush to the area you want to take fingerprints to check for the identity of the intruder.
Blow the dust off the surface; the cornstarch should stick to the surface.
Use packing tape to lift the print off of the surface. Stick the tape to a smooth dark colored paper to compare prints later on.
Set traps around areas that you do not want disturbed. Apply a small strip of cellophane tape to the bottom of a drawer or door to check for intruders.
Check to see if the tape is broken. If it is broken you should check to see what was disturbed since someone has been in your room.
Put a small piece of string across a door handle or on a pile of items you do not want disturbed. If it has been moved then someone as gone through your items, and you should conduct a more extensive check.