Malfunctioning elevators are a major source of frustration for the residents and tenants of high-rise properties, which can in turn cause serious headaches for their owners and managers.

This is particularly the case for tenants or occupants that are either elderly or disabled, and are only capable of accessing their places of residence with the assistance elevators. The able-bodied are also bound to find elevator outages frustrating, given the additional time and effort incurred when climbing staircases, or…