A method of, and a system for, controlling, managing and maintaining a client's weight are performed by placing a weight sensor device in a location that is convenient to the client, periodically generating weight signals at the sensor device, providing a computer system remote from the location of the sensor device, storing information associated with the client at the computer system, using a wired or wireless connection to connect the sensor device to the computer system, receiving and processing the weight signals in accordance with weight maintenance algorithms at the computer system, and reviewing the processed data by a professional manager to monitor the client's progress. The weight sensor device is provided with no indicator of the client's weight. The client is prompted to step on and off the sensor device. There is no visual display or other indication at the sensor device to indicate the client's weight.