If Sony and Keiichiro Toyama's Gravity Daze had an AR app, it might look something like this.
That's IF it had an AR app, of course, which it doesn't.
Toyama shared this pic at Twitter today.
It seems that, rather than being some sort of magic Sony internal AR app, Toyama may have just pasted Kat on a cityscape. He asked if everyone would like an AR app that allows you to make videos like this.
Considering Sony's commercial campaign for Gravity Daze, any AR app would probably need to have an apple theme.