[TeMPOraL]

It could go over Wi-Fi too. The problem isn't the network - the problem is that devices require a connection to things outside your LAN.

[cobookman]

wifi gives the device a direct connection to/from the internet. Bluetooth stops that outright, and the application code decides which Bytes get sent to the device.

But i guess if there was a patch to WiFi which gave it a LAN connection only then that'd be cool.

[TeMPOraL]

You mean from POV of the smartphone? Fair enough. Though you can route Internet over Bluetooth too. So forcing devices to use BT is not a solution simply because it'll make the devices to ask for Internet connection over BT.

The devices themselves should not need Internet connection, period.