Biometry is the mathematical analysis of the biological characteristics of a person for the purpose of determining their identity irrefutably. Biometry is based on the principle of physical feature recognition. Fingerprints and the gamut of features measured in biometry, such as the iris, the retina, hand and voiceprints, provide irrefutable proof of the identity of a person because they are unique distinguishing biological characteristics that can only belong to one person.
Biometry is well adapted to the internet and can be used to filter access to commercial sites and intranets. Biometry can help to safeguard privacy by protecting our identity and data integrity.