The identification and verification functions in Fingerprint SDK library are governed by two important parameters: threshold and rotation tolerance.
The threshold is the minimum score needed to state that two fingerprints do match. The default value is 45 for the identification process and 25 for the verification process, ensuring a 1% FRR.
The rotation tolerance defines the maximum acceptable angle variation (in degrees) between two fingerprints being compared that will result in a match. This value is valid in both clockwise and counter-clockwise directions, so the maximum value that can be set is 180.