What is LS-4421?
LS-4421 is a real time fingerprinting device that scans both flat and rolled fingerprints. In flat fingerprinting, four fingers of each hand, starting with the index finger, are placed on the device for, then both thumbs are placed on the scanning surface for simultaneous scanning. In rolled printing, the finger is rolled from one edge of the nail to the other. Prints taken with LS-4421 are recorded to be sent to the central dataset.