US Patent 7577522 Spatially associated personal reminder system and method

Spatially associated reminder systems and methods enable users to create reminders and associate those reminders with entering/exiting particular trigger areas. A user's portable computing device triggers an alert/displays a reminder based upon a user entering and/or exiting a trigger area. A user interface supported by the portable computing device allows a user to terminate the reminder so it will not trigger again, to defer the reminder so it triggers again after an elapsed time, to reset the reminder so that it triggers again only if a user leaves the area and then returns, to request a last chance, causing the portable computing device to remind the user again upon exiting the area to ensure the user did not forget to act upon the reminder, or to edit the reminder. The user interface also enables users to graphically define trigger areas within the physical world to be associated with personal digital reminders using geospatial imagery.