An oral care apparatus that includes an oral care implement and a tracking module detachably coupled to the oral care implement. The oral care implement includes a body having an inner surface that defines an internal cavity. The tracking module may be coupled to the oral care implement by inserting a portion of the tracking module into the internal cavity of the body. The tracking module includes a coupling portion and an electronics portion that are coupled together so as to be fixed together in the axial direction but freely rotatable relative to one another. The tracking module may only be able to be inserted into the internal cavity of the body in a single orientation. Furthermore, when in the internal cavity, the electronics portion of the tracking module may be non-rotatable relative to the body while the coupling portion of the tracking module remains rotatable relative to the body.

An oral care system includes: an oral care device including a head having a reference face; and a plurality of sensors configured to generate sensor data, the sensor data including: motion data and orientation data corresponding, respectively, to motion measurements and orientation measurements of the reference face during a freeform oral care routine; and image data generated from external images of the oral cavity during the freeform oral care routine; and at least one programmable processor communicably coupled to the plurality of sensors, the at least one programmable processor configured to: generate transformed sensor data from the sensor data, the transformed sensor data comprising the orientation data transformed to be expressed in terms of an angular orientation system, the motion data, and enhanced image data, the enhanced image data representing each external image of the oral cavity combined with a representation of corresponding transformed orientation data.

A toothbrush comprising a drive mechanism and electronic circuitry configured to drive the drive mechanism to execute toothbrushing motions is disclosed. The electronic circuitry comprises a drive circuitry and a controller which is configured to form a drive signal to operate the drive circuitry to generate drive current. The drive signal comprises a plurality of signal packets, wherein a signal packet has a signal packet duration and comprises a train of switching signals. The switching signals are configured to repeatedly switch on and switch off drive current supply to the drive mechanism at a switching frequency f.sub.s. The signal packet duration is configured to define a rhythm of toothbrushing motions.

A personal care device that is capable of two-way communication is provided. In some embodiments, the personal care device operates in a first mode and a second mode depending on whether a signal has been received from a networked computing device, thus allowing a single human-machine interface (HMI) device to both control the personal care device and to cause signals to be sent to the networked computing device. In some embodiments, the personal care device is configured to present media streamed from the networked computing device, and/or to stream audio detected by the personal care device to the networked computing device.

Systems, methods, and devices for providing feedback to an individual based on brushing performance, and providing guidance for the individual's brushing, are provided herein. In one exemplary embodiment, after an oral hygiene device is orientated, a determination is made as to a segment within the individual's mouth that a brush head of the oral hygiene device is located. Upon this determination being made, a sub-segment within the individual's mouth where the brush head is located is also determined. A brushing performance within the sub-segment is calculated and displayed to the user. A level of compliance for the particular segment is determined based on the brushing performance of the various sub-segments within the particular segment. If the level of compliance exceeds a pre-set compliance level for that segment, the individual is guided to a different segment within their mouth for brushing.

A personal care system having a treatment device for applying a treatment to the skin or hair of a user is provided. The treatment device has a camera for taking an image of the skin. The system may include or be in communication with an application programming interface (API) that can process the image. The system or an associated API can recommend the use of treatment regimens or topical products according to information determined from the digital image of the skin.

A motion tracking element for an oral hygiene element such as a toothbrush. The motion tracking element may be detachably coupled to the oral hygiene element. The motion tracking element may include a body having an outer surface, a portion of the outer surface having a pattern that includes a plurality of indicators with a non-circular shape. The indicators may be flush with and form part of the outer surface. A plurality of visual markers may be located on the outer surface, each of the visual markers having a circular shape. The plurality of visual markers may be formed integrally with the body. A method for estimating a pose of an oral hygiene device may be achieved using the motion tracking element.

In one embodiment, the invention can be an oral care system that includes a toothbrush; a programmable processor configured to receive oral characteristic data indicative of an oral characteristic of a user; and determine for the user, based at least in part on the oral characteristic data, at least one of a suggested brushing routine and a brushing evaluation for a brushing session.

A skincare device includes a brushhead including a marking disposed on a surface of the brushhead, the marking including a shape and a color; a body including a motor assembly configured to oscillate the brushhead; and a first optical encoder configured to detect the marking and determine an identity of the brushhead.

A method includes determining a position of a skincare device with respect to a body part of a user via one or more sensors on the skincare device, the skincare device configured to apply a treatment to the user's body part; obtaining a location of a target area on the body part having a condition for application of the treatment; adjusting a parameter of the skincare device according to the location of the target area and based on the condition.