SMS my GPS

Android app that listens for incoming SMS text/data messages and conditionally sends an automatic reply containing GPS location data.

Screenshots:

Preferences:

• Enable Service checkbox:
  • used to enable/disable this service
• ActionBar menu items:
  • Add Rule
    • opens dialog with fields to define a new whitelist rule
  • Send Silent SMS
    • opens dialog to send a silent data-only SMS message to another phone
• whitelist rules contain fields that are compared to all incoming SMS text/data messages:
  • Sender must end with:
    • this value specifies a phone number (without any punctuation)
      • a match occurs when either:
        • the sender of the SMS message ends with this exact value
        • this value is exactly equal to the special match-all glob pattern: *
  • Message must begin with:
    • this value contains any arbitrary string
      • a match occurs when either:
        • the body of the text SMS message begins with this exact value
        • the body of the data SMS message is exactly equal to a Silent SMS,
          as generated by either:
          • the ActionBar menu item: Send Silent SMS
          • the app: Silent Ping SMS for Android
• whitelist rules can be modified
  • clicking on an existing rule opens a dialog with options to:
    • edit field values, and save changes
    • delete

Functionality:

• if:
  • Preferences:
    • service is enabled
  • Android Settings:
    • Settings > Location > on
    • Settings > Location > Mode > high accuracy (GPS)
    • Settings > About phone > Network > Service state > In service
• when:
  • an incoming SMS text/data message matches any rule in the whitelist
    • a whitelist rule is considered a match when all of its fields match
      (ie: both sender and message)
• then:
  • the sender of the SMS message will receive an automatic reply containing:
    • Latitude
    • Longitude
    • Accuracy (meters)
    • Speed (meters/second)
    • URL to view a map of Lat/Lon on Google Maps

Notes:

• minimum supported version of Android:
  • Android 3.0 (API level 11)

Changelog:

• Version History

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Caveats:

• Google Voice:
  • if:
    • the Google Voice app is installed on the phone
    • the Google Voice account that the app is logged into:
      • registers the real mobile phone number as a forwarding number
      • configures incoming SMS text messages to be forwarded as well
  • when:
    • a SMS text message is sent to the Google Voice virtual mobile phone number
  • then:
    • the phone receives an incoming SMS text message
  • but:
    • the sender of the SMS message will always be a number belonging to the Google Voice backend infrastructure
    • the body of the SMS message is modified such that it begins with information to identify the real SMS sender:
      • ${original_SMS_sender} - ${original_SMS_body}
    • where the value of ${original_SMS_sender} is:
      • a name
        • when the phone number of the real SMS sender is associated with a name in the Google Voice account Contacts list
        • ex: John Smith
      • a phone number
        • when the phone number of the real SMS sender is not found in Contacts
        • ex: +19876543210

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Legal:

• copyright: Warren Bank
• license: GPL-2.0