A human-activated displacement control appliance for use with a computerized device to move an object--whether massless, such as a cursor/point/icon/etc. on a computerized display, or having mass, such as a vehicle/craft/robot/cart, manned or not. The appliance includes: (a) an electromagnetic (EM) positional detection component comprising a mechanism for generating a static field incorporated within/on a wearable-support, and sensing points incorporated within/on a donable-item; (b) the sensing points adapted for detecting positional changes, when/if any, within the field; (c) a processing unit for producing signals comprising information about the positional changes, for transmission to a receiving unit. The computerized device adapted to, upon receiving the information, direct the object to so move. The wearable-support may be a glove-support, hat-support, headband-support, wrist-support, shoulder-support, chest-support, shoe-support, belt-support, etc. The donable-item may be a sleeve-cuff, wristband, pant-cuff, vest, chest-sling, leg band, shirt-collar, pant-pocket, etc., a gunstock, grip-end of golf club, and other such tools. The mechanism for generating the static field may be a magetostatic field source, a visible light-emitting source, as well as other types. The sensing points may comprise elements of a magnetoresistive nature, visible light detecting element(s), etc.