I often ride alone and many week days I am the only rider out there. I carry all the appropriate gear and a cell phone with the sounds OFF.
Remote ? 3 to 7 miles out ? Izzat remote ? I don't know, don't really care.

I don't feel the need to do all those smart things like use a chalk board or make sure someone's watching for my return.
If I don't come back from a ride one day, oh well,,

I figure they can find me by watching for circling buzzards above my carcass