Usability of Visual Evoked Potentials as Behavioral Characteristics for Biometric Authentication

Biometric authentication methods are one of three approaches currentlyused. They offer a lot of benefits as well as they have fewdisadvantages. One of these disadvantages is low level of flexibility.It's not possible to change your biometric characteristic or even toincrease number of your characteristics. This could be problem if weconsider many systems with different level of security. Corruption ofsystem with low level of security could help attacker to gain access tosystem with higher level of security. Solution of this problem couldlie in use of behavioral biometric. The article introduceschallenge-response approach in this area. We discuss possibilities ofchallenge-response biometric authentication and how new behavioralbiometric suitable for this approach - visual evoked potentials. Wegive description of physiological features of this characteristic,discuss this properties and usability. We try to answer the question ifit's suitable only for liveness testing or it's possible to use it forfull authentication. Further we present design of prototypechallenge-response biometric authentication system which takesadvantage of visual evoked potentials.