NSD vs. Presentation API - Extensible Web Summit

Presentation API mentioned in the Extensible Web Summit (http://lanyrd.com/2014/extwebsummit-berlin/ ) in Berlin last week. Below is the sentence copied from the minutes . (http://oksoclap.com/p/ews-berlin ).

"...

Extensible Web, Huh ?

Dom: how does the extensible web fit with the web's security models?? Concrete example: exposing lower-level device APIs for network discovery, which might be more dangerous, versus high-level second-screen presentation API.

..."

Regards,
Louay