Abstract: The present inventions, in one aspect, is an activity monitoring system comprising a fixture having size/shape adapted to couple to a location on the user's body and a particular signature; and a portable monitoring device adapted to detect the fixture's particular signature. The monitoring device includes a housing that is adapted to engage the fixture; an activity sensor, disposed in the housing, to detect activity of the user and to generate data which is representative of the activity of the user; and processing circuitry, disposed in the housing, to calculate an activity-related quantity of the user, wherein the processing circuitry determines the monitoring device is engaging the fixture by detecting the fixture's particular signature and calculates the activity-related quantity.

Abstract: A portable activity monitoring device comprising a housing having a physical size and shape that is adapted to couple to the user's body, a plurality of sensors, disposed in the housing, to generate sensor data which is representative of activity of the user, processing circuitry, disposed in the housing and electrically coupled to the plurality of sensors, to calculate the one or more activity metrics of the user using the sensor data, wherein the processing circuitry calculates a number of stairs or flights of stairs traversed by the user using the sensor data.

Abstract: A portable activity monitoring device comprising a housing having a physical size and shape that is adapted to couple to the user's body, a motion sensor to detect user motion and, in response thereto, to generate data which is representative of motion of the user, an altitude sensor to detect a change in user altitude and, in response thereto, to generate data which is representative of the change in altitude of the user, processing circuitry to calculate activity metrics of the user, wherein the processing circuitry: (i) calculates a motion metric using the motion data, (ii) calculates an altitude metric using the altitude data, and (iii) calculates at least one sleep metric of the user. In certain embodiments, the processing circuitry may automatically determine a sleep mode of the user using the motion data and calculate at least one user sleep metric.

Abstract: The present inventions, in one aspect, are directed to a portable activity monitoring device to calculate a number of stairs or flights of stairs traversed by a user, the monitoring device comprising (i) a housing having a physical size and shape that is adapted to couple to the body of the user, (ii) an altitude sensor, disposed in the housing, to detect a change in altitude of the user and, in response thereto, to generate data which is representative of the change in altitude of the user, and (iii) processing circuitry, disposed in the housing and coupled to the motion sensor and the altitude sensor, to calculate a number of stairs or flights of stairs traversed by the user using the data which is representative of a change in altitude of the user.

Abstract: The present inventions, in one aspect, are directed to a portable activity monitoring device adapted to couple to a body of a user, comprising a housing having a physical size/shape that is adapted to couple to the user's body, an altitude sensor to detect a change in altitude of the user and to generate data which is representative of the change in altitude of the user, and processing circuitry to calculate: (i) a number or flights of stairs traversed by the user using the data which is representative of a change in altitude of the user, and (ii) a state of an avatar using the data which is representative of the number or flights of stairs traversed by the user. The device also includes a display to output data which is representative of the state of the avatar.