It is possible for biometrics to offer significant enhancements to the PKI model. The co-operation of these technologies potentially brings a lot to the area of secure data exchange and general encryption. In the discussion on whether biometrics could enhance PKIs, the distinction has been drawn between (1) the use of biometrics in order to secure the access to the private key by the user, (2) the use of the biometric as an electronic signature and (3) the use of biometric characteristics as a private key in a PKI environment. Currently, most of those approaches are either still at the concept level, or in a pilot phase. Certainly within this structure, it appears that there is great promise for the continued integration of these two technologies.