What type of fingerprints require enhancement for visibility?

Latent prints are the type of fingerprints that require enhancement for visibility. These prints are not readily visible to the naked eye because they are formed by the natural oils and sweat deposited from the fingers onto a surface. Because of their invisible nature, latent prints often need to be revealed through various enhancement techniques, such as powder dusting, chemical treatments, or special lighting methods.

Visible prints, on the other hand, are those that are easily seen and are typically left on a surface when a finger touches a medium like ink or blood. Plastic prints are three-dimensional impressions left in soft materials, like wax or clay, and can often be seen without enhancement. Fingerprint dust is usually a method of collecting latent prints, not a type of print itself.