SigPlus Tools are either bundled as driver tools with the tablet, or are licensed separately (not individually bundled with tablets) for applications developed and rolled out by third-party software providers, resellers, systems integrators, and end-users. These parties may download SigPlus and it's associated tools and applications from the Topaz website and all updates and support are free of charge. SigPlus software includes licenses to US patents 5,120,908, 5,122,623, and 6,307,955.