That's quite clever...
I admire the hacks which grab snapshots of video memory, to grab the stupid onscreen keyboards which the banks love so much...
The problem with disabling scripts (I use No-Script in FF) is that most websites stop working, many of them stop working to an extent sufficient to render the relevant content invisible, and any online shopping site is a no-no because you just get the payment failing when the damned thing redirects you to the payment processor.
In practice, 99% of web users will never bother with that.
Which makes it kind of tricky...