Patent ID: 8553005

Claim:
A user interface comprising: a substrate comprising an attachment surface and defining a fluid channel adjacent the attachment surface; a tactile layer comprising an input region and a particular region, the input region attached to the substrate at the attachment surface, the particular region adjacent the input region, disconnected from the substrate, and substantially enclosing the fluid channel, the tactile layer defining a tactile surface opposite the substrate; a displacement device configured to displace fluid through the fluid channel to transition the particular region between a retracted setting and an expanded setting, the tactile surface flush across the input region and the particular region in the retracted setting and the tactile surface at the particular region offset from the tactile surface at the input region to define a guide along an edge of the input region in the expanded setting; a sensor coupled to the substrate and configured to detect inputs on the tactile surface; and a processor electrically coupled to the sensor and configured to respond to an input at the input region and to disregard an input at the particular region in response to the particular region in the expanded setting.