License Enforcement via USB Update

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Updates via the USB stick can be a low cost option for networks where content is updated infrequently. However, the lack of content licensing control and therefore the inability to collect license fees in sneaker-net applications makes the model uninteresting to the content service providers. SMIL with its {smil-payerId()} XPath macro offers a solutions for the problem.

Master SMIL Control File

In the SMIL folder of the USB stick, a file named index.smil is the first file run after an USB update. The file can be used to load player ID-dependent SMILs and therefore restrict access only to those with permission. A master SMIL file would look like the following:

/SMIL/index.smil 

<smil>
    <head/>
    <body>
        <a href="{smil-playerId()}/index.smil" actuate="onLoad" />
    </body>
</smil>

Upon loading, this file would immediately activate the <a> link to send SMIL player to a folder named by the ID of the targeted player and play the index.smil file in that folder.

Related

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