An Internet of Thing (IoT) device includes a camera coupled to a processor; and a wireless transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A golf swing playing aid device for use on a conventional golf club having a handle, an impact head and a shaft. The golf swing playing aid device may include a grip member having an outer portion and an inner portion. The outer portion may be adapted to be grasped by a hand of the user. The inner portion may be configured to slide along the golf club shaft. The playing aid device may include an electronic device including a rotational sensor adapted to detect a change in rotation relative to at least one axis, and a controller operably coupled to the rotational sensor. The controller may read the rotational sensor to determine the change in rotation relative to at least one axis. When the change in rotation is greater than a threshold amount, the controller may provide an indication to the user, thereby indicating over-rotation of the golf swing.

This disclosure relates to an alignment aid for a golf club. The alignment aid provides a golf club with one or more markings on or adjacent the hosel of the golf club, and can be used by the golfer to achieve a proper alignment. In particular, the alignment aid may include at least two markings, each of which can be used by the golfer to assist the golfer in achieving the proper alignment corresponding to a desired type of golf shot. As an example, the golfer may use one marking to achieve a proper alignment for a pitch shot, and the golfer may use another marking to achieve a proper alignment for a bunker shot.

A distortion display apparatus includes a distortion recording section and a distortion display section. The distortion recording section records the distortion of a golf club shaft during swinging in a first direction and a second direction at each time point when the distortion is measured. The distortion display section displays the distortion with a horizontal axis representing one of the first direction and the second direction and a vertical axis representing the other. The first direction is a direction in which a golf ball is hit by swinging the golf club. The second direction is a direction orthogonal to the shaft and the first direction.

A golf swing training apparatus having a body with a first side opposite a second side and a medial region between the sides. The body is operable to receive and secure a head of a golf club. An opening defined by the body is operable to enable a hosel of a golf club to exit the body. The device may be secured to the golf club by a strip of hook and loop fastener. The device has different, highly-contrasting colors on the front and back, thereby allowing a user to receive visual cues on the alignment of the clubhead during training swings. The device is the tactile and visual part of a training method which uses color sequencing and “word” association.

In a first aspect, a method for monitoring a golf swing is provided that includes coupling a mobile telephone to a golf club and employing the mobile telephone coupled to the golf club to monitor acceleration of the mobile telephone as the mobile telephone swings while a user swings the golf club, collect acceleration information based on the monitored acceleration of the mobile telephone as the mobile telephone swings, analyze the collected acceleration information to determine one or more characteristics of the golf swing based on the collected acceleration information, and output information regarding the one or more characteristics of the golf swing on the display of the mobile telephone. Numerous other aspects are provided.

Proposed is a swing analysis device which includes a measurement unit which is coupled to a golf club of a user, and is configured to continuously measure motion data during swing motions of the golf club, an analysis unit configured to analyze the motion data continuously measured by the measurement unit to generate a swing analysis value, and a communication unit configured to transmit the swing analysis value generated by the analysis unit to a user terminal. According to the swing analysis device, as a swing analysis value generated based on motion data of the golf club is transmitted to a user terminal, the swing analysis value can be directly output by an application program installed in the user terminal without analyzing the motion data thus to greatly improve the reaction speed of the application program.

A method of customizing a golf club, wherein the method includes generating operating data representative of a user operating a mechanical device. The operating data is generated by a first sensor sized and configured to be removably positioned in a mounting port formed on the mechanical device during operation of the mechanical device. The sensor is interchangeably positionable in the mounting port with at least one mass insert, the at least one mass insert being adapted to be interchangeably positioned in the mounting to provide at least two different mass configurations. The method further includes determining a recommended configuration of the at least one mass insert specific to the user based on the operating data generated by the sensor, and transmitting information representative of the recommended mass insert.

A shoulder motion exercise device and method of use having a retainer, a connector, an extender, and a slider. When the user mimics a golf swing, the device aids in the stretching and exercise of at least a shoulder and a portion of the torso.

A system for correcting alignment of a golf club is provided. The golf club includes a shaft, a golf club head mounted on a first end of the shaft, a camera embedded in the golf club head. A display module is adapted to display at least a partial view of the camera. Substantial alignment of a face of the golf club head with a target location will be observable in the display as substantial alignment between the target location with an alignment guide. Misalignment of a face of the golf club head with the target location will be observable in the display as a misalignment between the target location with the alignment guide, for which a position of the golf club can be adjusted to bring the face of the golf club head into substantial alignment with the target location.