Comment left here 

Bloody hell! Although I suppose it might save us from tourists (joke, definitely joke, I hope). Is there any forum you can have a go at them about wasting public money? There’s an idea – why not get off your backsides and do your job preventing it? Maybe pay for some police officers with the cash you just threw down the bog?

It’s like the “ID cards stop terrorism” argument – how exactly? Unless you are going to start something like the pass laws like they had in South Africa under apartheid? And we all know who will have their movements restricted, don’t we? All of the guys on 7/7 were UK citizens and would have had valid ID. No-one suspected anything or they would have done something about it. Gah!

The authorities have to be seen to be doing something so they spend money on paranoid crap like this.