Patent ID: 8463577

Claim:
A portable activity monitoring device adapted to couple to a body of a user, the portable activity monitoring device comprising: a housing having a physical size and shape that is adapted to couple to the body of the user; a plurality of sensors including: an altitude sensor, disposed in the housing, to generate data which is representative of a change in altitude, and a first motion sensor, disposed in the housing, to detect motion and, in response thereto, to generate data which is representative of motion; a user interface, disposed in the housing, including a display; and processing circuitry, disposed in the housing and coupled to the plurality of sensors and the user interface, to: detect a user input to the user interface using data from one or more of the plurality of sensors, wherein, in response to the user input, the processing circuitry outputs data to the display, and calculate data which is representative of a number of stairs or flights of stairs traversed by the user using the data which is representative of the change in altitude.