By Michiel van der Veen and Els Kindt.
As the world is quickly moving into the Fourth Industrial Era, more people put more of their personal data and that of their devices online. In this vast digital landscape, a wide range of private companies and government agencies collect, process and (re-)sell this data, and establish digital identities around them. With fingerprints, face recognition and iris scan technology, biometric systems can then authenticate and verify individuals to allow or deny access to a wide array of services. But as always, all these new developments also present a whole new range of ethical, legal and technical difficulties. Overcoming them will be one of the main challenges of our times.
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