Actually, I had bought a trigger for Lumiakamera to get the part now I have that thing lying here but it was a bad buy, because I would have the Nokia Treasure Tag 2 must purchase instead of 10. The Treasure Day 10 has no key and thus no trigger. That the thing about Bluetooth work is logical, because NFC near field would be sufficient and only a few centimeters. This could be indeed a theft protection (pocketing) but never implemented an application that is activated only when one is already several yards away. In so far as the Bluetooth version is logical, because after all, since we're talking about several meters. This part works well with me. Connection problems are also normal, because it is sufficient a vapor cloud or something reflective and already howling smartphone going on. Otherwise you can not complain. I'll keep the part and pinnnen my umbrella, because that is now number 12. From the money saved to buy then to Treasure Day with the number 2 .......