| CPC A46B 15/0006 (2013.01) [A46B 5/026 (2013.01); A46B 15/0002 (2013.01); A46B 15/0038 (2013.01); A46B 17/08 (2013.01); A61B 5/486 (2013.01); A61C 17/222 (2013.01); A61C 17/225 (2013.01); A61C 17/3481 (2013.01); G16H 40/67 (2018.01); A46B 2200/1066 (2013.01)] | 16 Claims |

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1. A tracking module configured to be detachably coupled to a powered oral care implement, the tracking module comprising:
an outer casing comprising a proximal end, a distal end opposite the proximal end, an upper surface adjacent to the proximal end, a lower surface adjacent to the distal end, and a connection element that is configured to mate with a connection element on a handle of the powered oral care implement to couple the outer casing to the handle, the connection element of the outer casing being adjacent the proximal end; and
a plurality of visual markers each comprising a semispherical outer surface, the plurality of visual markers protruding only from the lower surface of the outer casing.
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