What is one fingerprint technique?

When fingerprints are dusted for in a confined space, such as in a car, superglue(cyanoacrylate resin) is first put into an open container, and the fumes are allowed to fill the space.It causes a chemical reaction which makes the prints stand out clearer.Probably the most important advance in fingerprinting has been the development of a database,with instant electronic recognition.Before this,matching was done by eye,and was very slow.