Something like this could be done with an app that I had helped to build called Reminders with Friends [http://www.slyceapps.com/reminders http://www.slyceapps.

Something like this could be done with an app that I had helped to build called Reminders with Friends [http://www.slyceapps.com/reminders http://www.slyceapps.com/reminders]. We allow you to create goefenced reminders and send them to other users.