An Internet of Thing (IoT) device includes a body with a processor, a camera and a wireless transceiver coupled to the processor.

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.

Methods, systems and devices for linking devices to tracking devices are provided. One method includes scanning, by an activity tracking device, for a semi-unique identifier broadcasted by a device. The method connects the device with the activity tracking device after the semi-unique identifier is found to be of the device by the activity tracking device. The activity tracking device is configured to communicate with the device to obtain device identification (ID) of the device. The method then automatically links the device to the activity tracking device when the device ID of the device matches a copy of the device ID stored in the activity tracking device. In one example, the tracking devices operate as a master and the devices operate as a slave.

Techniques for automatic tracking of user data for exercises are disclosed. In one aspect, a method of operating a wearable device may involve determining that a user of the wearable device has started an exercise, activating the GPS receiver in response to determining that the user has started the exercise, and detecting a time at which the GPS receiver achieves an initial GPS fix of a location of the wearable device. The method may further involve logging, based on output of the one or more biometric sensors, a first set of user data during a first time interval between the start of the exercise and the detected time of the initial GPS fix, and back-filling an exercise route of the user during the first time interval based on the first set of user data.

Provided is Exercise equipment including a gripping section that is gripped by a user; a weight section that is connected to the gripping section; a first electrode that is arranged on the gripping section; a second electrode that is arranged on the weight section; a measuring section that measures at least one of body fat percentage of the user and an electrocardiogram waveform of the user, using the first electrode and the second electrode.

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

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 multifunctional fitness device comprising a fitness device body, a support arm and an intelligent control system, with a display device being disposed on a front surface of the fitness device body, the display device being a mirror display screen having functions of video teaching and ordinary mirror, a camera device being disposed at the top of the display device, and the camera device including a micro-camera and an infrared camera, support arms being disposed at both sides of the fitness device body through sliding rails respectively, a gear groove being disposed on the support arm, a gear fixing device for use in cooperation with the gear groove being disposed on the sliding rail, a rope being disposed inside the support arm, the other end of the rope being connected with an intelligent motor, which motor produces resistance to provide a resistant force to the support arm.

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 system for providing a personalised exercise guide according to various embodiments of the present invention may comprise: a wearable device for measuring a first bio-signal of a user using one or more sensors, and for transmitting to an electronic device and measured first bio-signal of the user; and the electronic device for receiving from the wearable device the measured first bio-signal of the user, for obtaining body data of the user based on the received first bio-signal of the user, for calculating a required quantity of exercise based on the obtained body data of the user and a preset goal, and for comparing and analyzing body data variation of the user that is estimated based on the calculated required quantity of exercise with the actual body data variation of the user due to exercise.