Unlocking your iPhone or Mac automatically using your AirPods might be a thing in the future — scientists have proven that 'Ear ID' can work, detecting who you are based on your unique heartbeat, and your buds don't even need a heart-rate sensor to make it work
… The idea is that your earbuds will be able to recognize your unique palpitations, to verify that you're you, and to unlock access to things like your PC or phone, or perhaps even a smart door lock. …