Bluetooth padlocks are detachable locks that pass through an opening of a hasp or a link in a chain and are controlled with an app to restrict access to property. The Bluetooth technology requires a smartphone, but these locks eliminate the need for keeping track of keys or remembering padlock combinations. These padlocks also allow administrators to monitor and control access to keep goods safe from theft or unauthorized use. Bluetooth padlocks are commonly used when multiple people need access, such as in real estate and facilities management.