Adding bluetooth to a flashlight probably adds at least 2 dollars to the BOM, cpu upgrade and bluetooth module (for reference one of the cheapest might be an espressif chip in the $1.5 range, but they don’t do low energy very well when bluetooth is involved). So it’ll cost roughly $18 more than the next flashlight. So maybe? I’ve worked on BLE mesh, and it’s enough of a pain at the moment that I wouldn’t be willing to implement this on something as cheap as a flashlight, but then again I was just poking around and found flashlights easily selling for over $100. so there may be a market for this.
Unless it got popular enough that you were making bazillions. It really shouldn't need to cost much more than a normal flashlight plus the $2 Bluetooth SOC. An existing manufacturer would probably charge a premium but a new company could be like "2 buck more and you get Bluetooth".
Actually seems like something Pine64 would do really well.
(I could also be talking out my ass here though, I know nothing about business, and Bluetooth anything might attract technophobia and make some people actually less interested).
