Intrepid urbanite wonders whether he can find a device that allows him to make others responsible for his rescue when intrepidly challenging himself on long (to him) rides in terrain found at 1 mile or more in distance from Civilization.
If you don't think it's your responsibility to take care of yourself when you're out having fun in the woods, desert, hills, canyons, gorges, valleys, riverbottoms, creeks, streams, rivers, then maybe you should stop re-creating in those places.
If you need the security of a cell phone, sat phone, locator beacon or guaranteed rescue device, you're not prepared to be in the situation. So go home and don't come back until you are prepared.
No, your e-certificate from Cyphen Backcountry Experience won't suffice.