The FBI has a database consisting of some 200 million fingerprint records... As
part of a modernization program, the FBI is digitizing these records as
8-bit grayscale images, with a spatial resolution of 500 dots per inch. This
results in some 10 megabytes per card, making the current archive about
2,000 terabytes in size.
Fingerprints go digital,
Notices of the American Mathematical Society,
volume 42, 1995, page 1278.
Quotes selected by Palle Jorgensen