It probably wont, but it's closing the door, and any measure by which that door closes should be welcomed.
No, it doesn't and for the reasons mentioned earlier.
Now try and maintain your composure here because I know you're a bit upset and all, but as has been pointed out this will not stop problem gamblers from gambling. That's why it's referred to as a 'problem'. Amazing concept, yeah?
It will, however, stop the more casual user that doesn't really want to go through the hassle of getting a card etc. This is based on stats from the government itself, mind you, who estimate that revenue will drop by around 30%.
The argument that you don't like poker machines or that clubs used to get by without them is idiotic and pointless. They do exist and they're not going anywhere, so let's deal with the issues at hand instead.
Given that, here's the other thing. Poker machines are not evil. They're just, well, machines. It always has been and always will be up to the individual to control or look after themselves.
And that's where this policy is flawed - without any shadow of a doubt, the impact will be felt by those
other than the ones it is aimed at. Problem gamblers don't let small obstacles get in their way. Completely pointless. Costly, but pointless.