Not sure how that could be implemented without creating a domain specific set of actions like defined Intents in android or Siri intents on iOS. In this case, a

Not sure how that could be implemented without creating a domain specific set of actions like defined Intents in android or Siri intents on iOS. In this case, apps would be required to use a messaging intent that provides location information once a message is initiated by a user. But how to be sure user initiated the message?