[Navarr]

Chromecast isn't the right brand for what the author is suggesting. But what the author is suggesting is a really neat idea.

But it's no different from having a touchscreen with an NFC contact point. The Chromecast brand has nothing to do with it. Such a box could easily be a Chromebox - with NFC & Beacon support.

[maxwellito]

The only reason I mention the Chromecast is because it's a quite popular device, cheap, easy with an existing ecosystem of apps.

But yes, this would work with anything able to display a webpage (:Raspi..) :)