There are lots of ways to render beautiful, unobtrusive UIs that are difficult to emulate. For instance, a Retina-detail polished metal button would be readabl

There are lots of ways to render beautiful, unobtrusive UIs that are difficult to emulate. For instance, a Retina-detail polished metal button would be readable and look good but it would be non-trivial to recreate (unlike our current login dialogs that could practically be recreated in MS Paint). It would be especially secure if it included personal information, e.g. an etched-in-metal appearance of your full name.