There are various kinds of fingerprint scanners available. These scanners are categorized according to the quality, certifications, dpi, algorithm used for matching the fingerprints. Not just fingerprint there are Vein scanners available as well.
Choice of these scanners can be made according to the requirements. Budget, kind of application, the number of fingerprints that need to be matched. For example, A low-cost scanner can be used for the application like PC login, software login. For the application like library management system, there is a requirement of the high-quality scanners. When fingerprints need to be matched with a big database of fingerprints a good quality high-resolution scanner is required.