Audio-on-demand information is also available over IBOC airways, and iBiquity has forged an exclusive partnership with Command Audio Corporation, which owns patents on technology that enable HD Radio users to download content and store it for later use. For most of these
services, it is not yet clear exactly what kind of information or content will be delivered. While secondary text information and news are obvious applications, there is also talk of advertising possibilities.
This capability raises the notion that HD Radio receivers could act like PVRs. Struble confirmed that PVR-like applications are absolutely possible, so long as there is hardware to support them. However, copyright questions could arise, given the digital quality of the transmissions. When asked, Struble said that there was no content-protection scheme built into IBOC, nor were there plans to develop one, but that it is possible to integrate an encryption scheme into the technology that wouldn't affect the quality of the signal.