Develop a Sidebar (Widget) Based on Internet Connection, Not on Domain
<p>I've been given an interesting assignment - no idea how to start or even if it's possible.</p>

<p>My client needs a sidebar/widget (like a Twitter/Facebook bar) that appears on your screen while visiting certain websites.</p>

<p>The tricky bit is that this sidebar/widget must not be linked to a website, but through a certain internet connection.</p>

<p>The idea is that the client will be providing free internet access, and when connected through their connection, regardless of browser or OS, a sidebar/widget will appear on the users machine.</p>

<p>I code in C# - knowledge of the language good.</p>

<p>Any advice? Has it been done before? Is this even remotely possible?</p>
