I'll just add it here in case anyone missed it...
QUOTE
Among the contributors to the online debate was former police officer Ruwan Uduwerage-Perera, who said: “Schools that adopt this dubious system are, in my opinion, aiding the piecemeal erosion of the civil rights in this country, that some within this, and the past Government are progressing.
“It was stated in a 2009 article in the Guardian on this very topic: ‘It seems that in the blink of an eyelid (or iris scan), our children are losing the civil liberties and freedoms we are fighting so hard to preserve’.”
Others took the view that this is just a convenient way for schools to store data.