Sensing device

A sensing device for sensing region identity data and generating movement data when the sensing device is moved relative to a region of a surface, the region identity data being indicative of an identity of the region, the movement data being indicative of the movement of the sensing device relative to the region, the surface having disposed upon it coded data indicative of at least one region associated with the surface and of a plurality of reference points of the region, the sensing device including:

• a region identity sensing means configured to sense the region identity data using at least some of the coded data;
• a motion sensing means configured to generate the movement data by;
• using sensed coded data to determine the sensing device's movement relative to two or more reference points;
• using a distance estimator configured to estimate a distance of the sensing device from at least one of the reference points;
• and
• a communicator configured to communicate the region identity data and the movement data to a computer system.

A sensing device for sensing region identity data and generating movement data when the sensing device is moved relative to a region of a surface, the region identity data being indicative of an identity of the region, the movement data being indicative of the movement of the sensing device relative to the region, the surface having disposed upon it coded data indicative of at least one region associated with the surface, the sensing device including:

• a region identity sensor configured to sense the region identity data using at least some of the coded data;
• a timer configured to generate a time reference as the sensing device is moved relative to the surface region;
• a motion sensor configured to generate the movement data;
• and
• a communicator configured to communicate, to a computer system, the region identity data, the movement data and time reference data, the time reference data being indicative of the time reference of the movement data as generated by the timer.

A sensing device for sensing region identity data and generating movement data when the sensing device is moved relative to a region of a surface, the region identity data being indicative of an identity of the region, the movement data being indicative of the movement of the sensing device relative to the region, the surface having disposed upon it coded data indicative of at least one region associated with the surface and including a plurality of tags, each of which is indicative of an identity of a region within which the tag lies, and of a reference point of the region, the region being associated with the surface and the reference point being indicative of the position of the tag within the region, the sensing device including:

• a region identity sensor configured to sense the region identity data using at least some of the coded data;
• a motion sensor configured to sense coded data, and using the sensed coded data generate the movement data on the basis of the sensing device's movement relative to at least two of the periodic elements, and using acceleration sensing means to sense acceleration of the sensing device;
• and
• a communicator configured to communicate the region identity data and the movement data to a computer system.

A sensing device for sensing region identity data and generating movement data when the sensing device is moved relative to a region of a surface, the region identity data being indicative of an identity of the region, the movement data being indicative of the movement of the sensing device relative to the region, the surface having disposed upon it coded data indicative of at least one region associated with the surface, the coded data including a plurality of tags, each of which is indicative of an identity of a region within which the tag lies, and each of which includes at least one periodic element of the coded data, the sensing device including:

• a region identity sensor configured to sense the region identity data using at least some of the coded data;
• a motion sensor configured to sense coded data, and using the sensed coded data generate the movement data on the basis of the sensing device's movement relative to at least two of the periodic elements and using acceleration sensing means to sense acceleration of the sensing device;
• and
• a communicator configured to communicate the region identity data and the movement data to a computer system.