In 2014, several such devices appeared in China, and by 2015, they became widely popular in the United States, following numerous celebrity appearances with the device. There is no universally accepted name for the device, as its various product names are attributable to the companies which distribute it and not its manufacturers.
With more and more people playing and using self balancing two-wheeled scooters, the scooters will be known more wildly. It is a good choice to free your feet and a good way to exercise. But do follow the users' manual and wearing the safety gear when you playing it.