Abstract: An authorization system uses card and signature devices to provide access to a machine. The devices include capacitance grids positioned on different surface regions of the devices to convert fingerprint images of at least two fingers into electrical signals. An images processor in the device processes the electrical signals detected from the fingerprints to produce electrical images of the user's fingerprints. The devices store fingerprint and encrypted user identification data. An authenticating processor compares the user's fingerprints detected on the capacitance grids with authorized user's previously recorded fingerprint's and the user's name and identification data to produce an authenticating signal if there is a match of the fingerprint images. Signature storage and identification can be provided to store and authenticate the uses's electronic signature.