Re: £5 or £10
I have a £10 key fob finder (plan to use it to track cat at times lol). And it uses an in built mic for pairing. The bbs could do the same. In built mic of a few pence and use it to detect a local audio reset signal from the app.
I have a £10 key fob finder (plan to use it to track cat at times lol). And it uses an in built mic for pairing. The bbs could do the same. In built mic of a few pence and use it to detect a local audio reset signal from the app.