This looks like an interesting bluetooth solution:
http://www.eiskits.com/MB.html
Argos (no, not the UK catalogue shop ) is what the device is called.
By looking at the spec sheet it seems to be promising, but I don't think I would go out and buy one just yet as it seems that it needs a bit of development (see the information about the current versions at the distributor - http://www.aardvarkmm.com/).
http://www.eiskits.com/MB.html
Argos (no, not the UK catalogue shop ) is what the device is called.
By looking at the spec sheet it seems to be promising, but I don't think I would go out and buy one just yet as it seems that it needs a bit of development (see the information about the current versions at the distributor - http://www.aardvarkmm.com/).