There is uprage in the UK about finger printing school children after it was discovered a class of 3 year olds were tricked into giving theirs by being told it was a "spy game". It is also said that older children have been victimised if they did not comply and even threatened with exclusion.
Junior education minister Lord Adonis even have to balls to defend this practise and said some schools' use of finger prints claiming was for the attendance register, and access to meals and libraries and that they were destroyed once pupils left the school.
Considering we cant even feed our school children properly in the UK, I see little need for high security dining rooms. Well do you?