Abstract: A device cradle and device management system monitor and control a usage time of a portable electronic device. The device cradle includes a housing including at least one slot in which a device is disposable and a sensor to detect whether a device is disposed in the slot. The device cradle may be connectable to a server and/or a terminal, which may control the device cradle to monitor whether the device is disposed in a slot of the device cradle. The device cradle may decrease conflict between children and parents regarding use of electronic devices.