Using an app designed for the sole purpose of tracking a phone (mine), it also provides a feature to embed the map (my location) into a website (my Pikes.Place) which updates every 60 seconds. So with a link ...
(bookmarked or made into a button on a phone), with one tap I can be located.
For all those single elderly ladies out there. (grin)
Add a button to your Phone to come to this map in one tap.
Open Safari and navigate to Here's Denny.
Tap Go
Tap the Share button, which looks like a square with an arrow pointing out of the top
Scroll down and tap Add to Home Screen
Choose a name for the shortcut
Tap Add
Android device using Chrome:
Tap the menu icon (three dots in the upper right-hand corner)
Choose a name for the website shortcut
Chrome will add it to your home screen