The Aroco WiFi Beacon is an optional standalone accessory that create a WiFi SSID zone for tracking by AL312. It is particularly good for location where there is no WiFi signal, e.g. senior's home. When a senior carrying an AL312 device arrives or leaves his or her home with an Aroco WiFi Beacon placed, the AL312 will sense and send a corresponding Arrival or Exit Notice to the caregiver.