user-centric augmented-reality pricing app (geo-location specific)

[johanatan]

I don't know if this has been proposed yet or not but it would greatly increase BTC's usefulness as a currency given the wide fluctuations in BTC's value and its inherently deflationary economy.

Brick-and-mortar businesses provide a wifi-hotspot exposing a database of prices (in BTC) for every tangible good (or service) they offer (each of which has an RFID for identification).  Users point their smartphones at items and see pricing in their preferred units (even historical) as augmentations of the view.  Of course, support for ad hoc conversions via manual input would be supported as well.