by Michael Chu
Reply to a text message by providing your current location. Let friends & family find out where you are automate-ically, or maybe use it to locate a lost phone.
The passphrase is stored in a variable: edit it to your liking.
A second variable can store a set of whitelisted numbers to secure access to this functionality.
This flow will try to get a GPS lock first; if that times out then your network location is used.
It tries to turn on GPS if required.