That is why I don't use it because it caused the NW bank site to crash. The bank keep advertising it's anti phising software after you have logged in but I ignore it.
What worries me in the future is if you are unlucky enough to be fleeced and your account is zero, the bank will not help you because you didn't download their anti phising software.
Banking using Apple products is a breeze. However I draw the line using mobile phones and tablets for banking purposes. I'm off to M&S now I hope they have sorted out their 'one click card' transactions problems.
BBC News - Contactless 'charging errors' at Marks and Spencer