The 360-DISC logo will need to get attention. 
 
I would like a 3-d shaped disc, circle, or sphere. It doesn&#39;t have to be symmetrically round (an oval could work very well, with all the type on 1 line), but I would prefer a circle. 
 
The logo will often accompany a QR code on a sticker out in a city, with nothing else on it. A strong enough logo would make someone with a smartphone say, &#39;Hey, what&#39;s this?&#39; and jump into the walking tour. 
 
The logo will also be used in the panoramas themselves, as an icon to denote that more information is available by clicking on it. In this sense, it will function as a button, while at a very small size. It may not be legible at this size, but it should be recognizable as the 360-DISC logo. 
 
I notice that overlaying 3, 6, and 0 over one another gives some interesting concepts to start from. Having two open ovals (top and bottom) in this shape gives a place to write the two halves of the name. 
 
In a different concept, balloon-type fonts could be good. Maybe some typography with big 3d-depth. 
 
Round corners, for obvious reasons, are essential. But if a square border sets everything straight, I could be open to it, so long as it&#39;s symmetrical. 
 
For colors: bright yellow is very visible, and stands out on both dark and light backgrounds. This makes it appealing as a color, but I am open to any color that is striking to the idea. 
 
Remember, this logo needs to get ATTENTION. Not just for passerby, but also for users of the panorama tech. The logo will need to stand out on photograph panoramas in a number of different settings.