HTTP site and Location Sensor
If your site is a non-secure site (HTTP) or does not have a valid SSL ( Secure Sockets Layer) and/or you have not migrated your site to HTTPS ( Hyper Text Transfer Protocol secure), chances are your customer will have a message returned “No results found” even if you have Location Sensor enabled.
Most browsers , and the google map API require sites to be secure to allow the search engine to detect your customers whereabouts. There have been numerous articles written concerning the security changes.