Ms Hewitt, one of the leading opponents of the scheme which is being pushed by David Blunkett and Tony Blair, said the issue was far from settled. "Putting fingerprints on passports and driving licences all makes a great deal of sense," she said. "My view is that if we are going to make it compulsory for everybody to have one, even if they don't need it for those other purposes, we need to be absolutely clear that will deliver additional benefits."