The use of biometrics for monitoring migration flows and foridentifying migrants, who cannot have valid identity documents (asylum seekers, illegal aliens, etc.) is becoming standard. Globalization is a phenomena that, by itself, is an issue regarding the protection of privacy. It is enough to cite the practice of transferring data for processing to third world countries where, obviously, there are no kind of protection for this personal information that include sensitive one like criminal or medical records. Police corps are now exchanging more and more personal data around the world. That means that the decisions over issues are more and more taking place in international settings rather than national ones. This implies that various interests have to organize themselves internationally, including privacy advocates. One of the problem of the internationalization of the issues maybe harmonization of data protection standards This harmonization could have a bad effect, the one to lessen the level of protection in application in a country in favor of a less effective international standard.