An apparatus includes a network interface and a processing unit. The network interface receives a device registration request identifying an identity of a client device, an Internet address of the client device, and a physical location of the client device. The processing unit determines an identity of at least one sensor of the client device, at least in part based on the identity of the client device. The network interface transmits, to an Internet address of a server, the identity of the client device, the physical location of the client device, and the identity of the at least one sensor of the client device. The network interface receives data from the at least one sensor of the client device.