Enhancing controlling of haptic output

An apparatus comprising

• at least one processor, and
• at least one memory comprising a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause an activity tracking apparatus to perform operations comprising:
• obtaining motion data from one or more sensors, the motion data characterizing motion of the activity tracking apparatus;
• and
• controlling, based on the motion data, characteristics of a vibration causing a haptic output, wherein the haptic output is configured to be output as a response to an event on the activity tracking apparatus,
• wherein the activity tracking apparatus comprises a plurality of modes, the characteristics of the vibration being configurable in each of the plurality of modes respectively,
• wherein the controlling of the characteristics of the vibration causing the haptic output comprises controlling, in a first mode of the plurality of modes, the vibration such that the vibration is produced substantially between signature points during a first part of a motion cycle of the activity tracking apparatus, the motion of the activity tracking apparatus changing direction most significantly during the motion cycle at the signature points, wherein an absolute value of acceleration of the activity tracking apparatus during the first part of the motion cycle is less than an absolute value of acceleration of the activity tracking apparatus during a second part of the motion cycle.

A non-transitory computer readable storage medium comprising program instructions which, when executed by an activity tracking apparatus cause the activity tracking apparatus to perform operations comprising:

• obtaining motion data from one or more sensors, the motion data characterizing motion of the activity tracking apparatus;
• and
• controlling, based on the motion data, characteristics of a vibration causing a haptic output, wherein the haptic output is configured to be output as a response to an event on the activity tracking apparatus,
• wherein the activity tracking apparatus comprises a plurality of modes, the characteristics of the vibration being configurable in each of the plurality of modes respectively,
• wherein the controlling of the characteristics of the vibration causing the haptic output comprises controlling, in a first mode of the plurality of modes, the vibration such that the vibration is produced substantially between signature points during a first part of a motion cycle of the activity tracking apparatus, the motion of the activity tracking apparatus changing direction most significantly during the motion cycle at the signature points, wherein an absolute value of acceleration of the activity tracking apparatus during the first part of the motion cycle is less than an absolute value of acceleration of the activity tracking apparatus during a second part of the motion cycle.