An embodiment of a minder device includes a selector and a transceiver. The selector is configurable in one of multiple configurations each corresponding to a respective one of multiple responses. And the transceiver is configured to receive, from a host server via a cellular network, a message from a monitor device associated with the minder device, and to send, to the monitor device via a cellular network and the host server, the one of the responses corresponding to the one of the configurations in which the selector is configured. For example, such a device can be a less-expensive alternative to, and can allow more monitor control, than a smart phone. Furthermore, such a device can be suitable for tracking and locating children too young to have a smart phone, for tracking and locating pets, and for tracking and locating objects.