Doing it myself with Bluetooth 4.0 seems quite difficult and expensive compared to a commerical solution. I suppose the only reasonable thing to do is to give up on the idea of doing it myself 
Many thanks for the help and quick replies.
Doing it myself with Bluetooth 4.0 seems quite difficult and expensive compared to a commerical solution. I suppose the only reasonable thing to do is to give up on the idea of doing it myself
Many thanks for the help and quick replies.