Immigration (Biometric Registration) (Pilot) Regulations 2008

My Lords, I apologise profusely for coming in at the last minute, but I had not realised that this debate was taking place in the dinner hour. I want to put one important point to the Minister. A few weeks ago, I entered the United States and was duly fingerprinted. To my surprise, the official told me that my fingerprints were not the same as they were the last time I came in. I was then interrogated while an enormous queue of people with queries formed. What is the probability of having the wrong fingerprints in an immigration investigation?