How quickly does Ping locate?
If you are running the latest version of the Ping firmware and mobile app, Ping is constantly reporting it's location when there is significant movement enough movement to merit trying to get a GPS signal and connecting to the cell network. Also, if you connect or disconnect from Bluetooth, Ping reports in. So basically, the new Ping apps always have the last known device location.
If the location displayed appears HOURS old - don't worry! This could simply mean the device has not moved from that location since then and will report back in when it start's to move.