Mike, do not know what can be downloaded to wclvcl, took the test with the demo example (ProximitySender), yet I have more rejection than acceptance. I noticed that when I have a few devices to track works perfectly, but when tested in a crowded place, I realize that some units appear to accept message very fast, and most others do not get denied. If test with little work. I tested textblue and the same result as the demo application wclvcl. What can be? Use Win32 bits xp and antenna trendnet tbw104 ub.