+1

Copying my investigation/info from #5268

Would be useful to know which platforms/devices support links in the Geo URI scheme, eg:

<a href="geo:12.345,67.890?z=17">geo:12.345,67.890?z=17</a> 

"Support" in this case, would be defined as actually sending the user to a maps program, or a map website (eg google, or openstreetmaps).

Note: there is an existing custom protocol handling in caniuse, but it doesn't mention all of the safelisted schemes, such as "tel" or "geo", so a search query or short turns up nothing.

Examples

https://caniuse.com/#search=tel
https://caniuse.com/#search=telelphone <-- turns up only <input type="telephone">
https://caniuse.com/#search=geouri

Resources

https://en.wikipedia.org/wiki/Geo_URI_scheme
https://html.spec.whatwg.org/multipage/system-state.html#custom-handlers
https://caniuse.com/#feat=registerprotocolhandler