I hope this translates into something useful. Why in this modern age can't I have something smaller than a watch, say bangle size, that beeps when my phone is x

I hope this translates into something useful. Why in this modern age can't I have something smaller than a watch, say bangle size, that beeps when my phone is x (user-defined) feet away from me? This would answer the problems of forgetting to take my phone or when it slides out of the pocket of my cargo pants and is lost forever (yes, that's happened to me). Similarly, why can't I have a centrally-located button mounted on my wall that I push whenever the TV remote control goes walkabout? A beeping device would really help. Such innovations are much needed and long overdue. (Bluetooth's always been a pain, hopefully this new spec will fix it).