In the future scientists will develop
more secure methods of authentication. These methods—based on biometric technology—will provide a biological
authentication of a person, including characteristics
of structure and movement such as fingerprints, iris
recognition, voice responses, and digital signatures.
For example, the characteristics of a person's handwritten
signature include not only the actual signature
style, but also the pen pressure and the duration of
the signing process. Computers will record this information
as a digital algorithm, which they will compare against
future signatures. For more information, see http://en.wikipedia.org/wiki/Biometrics.
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