They would be within the same local wifi network. Or you could even use Bluetooth for a direct connection. There’s no reason for those things to connect to the internet, unless you want to update the firmware. Anything else is just a security and privacy risk.
I don’t think you’d even need the device itself to be connected to the internet for firmware. Your phone connects to the internet, gathers up the firmware, sends it to the device over BT. That’s how my helmet comms work.
If the device is connected to the local network and has some sort of maintenance UI then it might as well. I just don’t want it to be constantly connected or do it on its own.
They would be within the same local wifi network. Or you could even use Bluetooth for a direct connection. There’s no reason for those things to connect to the internet, unless you want to update the firmware. Anything else is just a security and privacy risk.
Even to update firmware, your phone could download the blob from the servers and then send it to the device via Bluetooth.
I don’t think you’d even need the device itself to be connected to the internet for firmware. Your phone connects to the internet, gathers up the firmware, sends it to the device over BT. That’s how my helmet comms work.
If the device is connected to the local network and has some sort of maintenance UI then it might as well. I just don’t want it to be constantly connected or do it on its own.