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.
iPhone using Safari:
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