Provided are location devices that identify the location for measuring physiological conditions, methods of operating the device, and computer program products for use with the device. The location device provides improved reliability in measurement data since it consistently provides the location for the measurements. In the context of a location device, an apparatus is provided that includes a structure configured to be attached to the skin of a user and configured to identify a location for physiological measurement. The structure has a shape configured to correspond to a portion of the user that is in a predefined positional relationship to the location for the physiological measurement. As such, the structure is configured to engage the portion of the user in order to identify the location for the physiological measurement. The location device may include one or more sensors for measuring physiological conditions or may work in conjunction with one or more sensors.
