A method and system of managing data in a storage device is provided. Embodiments relate to a band including sensors, a controller coupled to the sensors, an energy storage device, a connector configured to receive power and control signals, and a power manager. First, when an object is detected by the depth image sensor, image information is obtained by using the depth image sensor, wherein the image information includes angle information and depth information related to the depth image sensor for the object. Response to the formulated challenge isare received from the user and correctness of the received response is determined based at least partially on comparison with at least a portion of the collected authentication information. Also provided are methods of immunization which comprise administering to a vertebrate subject a submicron oil-in-water emulsion, and a therapeutically effective amount of a selected antigen entrapped in a microparticle. Indeed, it has been clinically demonstrated that the apheresis therapy is successful when the left ventricular ejection fraction is improved to 90% or more by the therapy.