Despite how rare it actually is that a criminal conviction will be based upon a fingerprint, thanks to the popularity of televised cop dramas, some would-be criminals go to extreme lengths to avoid fingerprint detection. Over the last few decades, numerous stories have emerged of criminals literally cutting and burning off their fingerprints. Shockingly, even plastic surgeons are being asked to help alter fingerprints.
Technically there is no law against a person altering or changing their fingerprints. However, other laws may be able to use an altered print as evidence for another crime. Also, it should be noted that changing a fingerprint does not remove a fingerprint. So after a fingerprint has been altered, a person will continue to leave fingerprints. If a person has changed their fingerprints, it is likely that any prints they leave will be more identifiable than they were before.
Additionally, fingerprints cover a person's entire finger and palm, and those with altered fingerprints may find themselves getting their full hand "fingerprinted." Simply the edges of a person's fingerprint, if not completely changed, can lead to a positive identification.