Abstract: An example method for securing a wearable device to a user occurs while the wearable device is worn around a body part. The wearable device includes a biopotential-signal sensor connected to an amplifier to adjust amplification of biopotential signal. The method includes receiving first information representative of power needed to amplify the biopotential signal to the particular amplitude for signal processing. The method also includes, in accordance with a determination that the first information indicates that the wearable device is not properly affixed to the body part, providing first instructions to adjust how the wearable device is affixed to the body part. The method includes receiving second information, and, in accordance with a determination that the second information indicates that the wearable device is properly affixed to the body part, forgoing providing second instructions to adjust how the wearable device is affixed to the body part.

Abstract: The disclosure provides electrically conductive elastomers.

Abstract: An apparatus for creating haptic stimulations is provided. The apparatus includes an inflatable bladder and a support structure attached to a portion of the inflatable bladder. The inflatable bladder is fluidically coupled to a pressure-changing device that is configured to control a fluid pressure of the inflatable bladder. The support structure includes a predefined pattern of cuts, and is configured to expand (or otherwise deform) in one or more directions according to a design of the predefined pattern of cuts and in relation with a fluid pressure inside the inflatable bladder. When the inflatable bladder receives the fluid from the source, the inflatable bladder expands, which causes the support structure to expand in the one or more directions and also to reinforce the inflatable bladder in the one or more directions. A wearable device and a system for creating haptic simulations are also disclosed.