Hey guys, so I'm working on a project to use my phone via bluetooth to unlock my car, maybe even start it. I'm currently wondering, is there a way I can embed something in my code, so that even if some other phone gets connected to my bluetooth module, my arduino won't accept commands from that source? Can I have some type of mac address filter that gets the phone's mac and only allows mac addresses on the white list to control the arduino?
Or maybe there's some way I can pair my phone to the module and program the module to not be able to pair with any other device?
Thanks for the help in advance.