One variation of a method for detecting breach events by residents of an assisted living facility includes: defining an access perimeter containing a first space and excluding a second space within a facility, the first space and the second space separated by a door; assigning the first individual access perimeter to a first resident, in a set of residents, occupying the facility; maintaining the door in an unlocked state by default during a first period of time; tracking locations of resident wearable devices associated with residents, in the set of residents, within the facility during the first period of time; and, in response to a first location of a first resident wearable device associated with the first resident falling inside the individual access perimeter and within a threshold distance of the door at a first time during the first period of time, triggering the door to enter a locked state.