I live in a gated community in which my Home Owners Association maintains the front part of the property and my Gardner supports the rest of the garden.   The main advantage of my purchasing of the HD-12 was to be able to monitor the watering schedules.  Since both have access to the HD-12 and at times may access the physical control unit, I fear that they may unknowingly change a program when doing some maintenance tasks.  I would like to see a Notification feature to inform me that a change has been made to the system.  In that way, I can investigate the modification and correct it accordingly.