System and method for sequentially processing a biometric sample

摘要

This invention provides for progressive processing of biometric samples to facilitate user verification. A security token performs initial processing. Due to storage and processing limitations, false rejections may occur. To overcome this, the biometric sample is routed to a stateless server with greater processing power and data enhancement capabilities. The stateless server processes and returns an enhanced biometric sample to the security token for another attempt at verification. In another embodiment, the security token may have a second failure when verifying the enhanced biometric sample. It can then send the enhanced or raw biometric sample to a stateful server. The stateful server processes the biometric sample and performs a one to many search of a biometric database having a master set of enrolled authorized user biometric templates. The security token uses signals from the stateful server to grant or deny access. In both embodiments, heuristics remain with the security token.

主权项

1. A method for identifying an unverified biometric sample, the method comprising:
identifying, using at least one processor and using characteristics of the unverified biometric sample, a physiological data type represented by the unverified biometric sample, wherein the characteristics of the unverified biometric sample are received from parameters associated with a security token; retrieving, using the at least one processor, a biometric applet having a generic component corresponding to the physiological data type; identifying, using the generic component of the biometric applet, data points of the unverified biometric sample to use with a biometric processing algorithm; retrieving, using the at least one processor, the biometric processing algorithm corresponding to the physiological data type; processing, using the at least one processor, the unverified biometric sample using the biometric processing algorithm and the identified data points to produce results; and attempting to match the results of the processing to at least one of a plurality of biometric template records.