Another method for finding fingerprints is called "fuming." This works for many surfaces where fingerprint powder doesn't work so well, and also for prints on portable objects. With this technique, chemical fumes react with the organic substances in fingerprints (amino acids, etc.) to cause invisible prints to appear.
Note: Be careful with the superglue - get an adult's permission.
Certain chemical fumes react with the sweat and other organic residue left in latent fingerprints. The strong chemical fumes from the cyanoacrylate in the glue will react with the residue from your fingers. The chemical reaction causes the residue to turn white so you can see it. Professionals also use ninhydrin (which reacts with amino acids in latent prints) and silver nitrate powder developed under a UV light.