A biometric gold standard register must, of course, be gold standard secure as well. In a recent discussion on ForumOxford, Tomi Ahonen said
There was a funny story in the book 100 Phenomena by Hannula & Linturi which they wrote as a set of news stories from the future. One was that when the full Finnish citizen database was on one server, some clever Asian hacker got into it, stole all IDs and sold them at bargain prices for Asians who wanted to get into the EU. Suddenly a massive amount of Asian people appeared on European borders with 100% digitally accurate passports and Finnish names like Mika Hakkinen, Kimi Raikkonen, Janne Ahonen, Tomi Ahonen, Jari Litmanen, Esa Tikkanen, etc.
Creating biometric databases and using them as a digital identity, rather than in support of a wider digital identity management system will inevitably lead down this route. If I look into the reader and the reader tells the security guard that I am the Prime Minister, then he will override the evidence of his own eyes and let me in to 10 Downing Street.
These opinions are my own (I think) and are presented solely in my capacity as an interested member of the general public [posted with ecto]