One trend in user interfaces (UI) and user experiences (UX) is using air gestures, where people wouldn’t need to touch screens. Do you see this technology growing? I predict that air gestures will spread not as a replacement for existing interaction methods, but as an alternative for achieving specific purposes. This is because, although it has been over a decade since smartphones and tablets became widespread, mice and touchpads are still the primary tools for office work. Similarly, even as air gesture recognition becomes more accurate and the necessary sensors become commonplace, I believe they will be used alongside our current input methods. In the context of HCI research, studies on air gestures have often emphasized benefits like speed and reduced physical burden. From my perspective, however, performing fine-grained operations with air gestures is still difficult. This means the importance of how accurately users can perform tasks will likely be even greater than it is for touch or mouse interactions. Conversely, this suggests that applications where a coarse operation is sufficient to achieve a goal (e.g., swiping left or right in the air above a smartphone to navigate web pages) might be a very appropriate use case.
Smart home devices like Amazon Echo already achieves this differently. For sure air gestures can be a great addition but it's already obsolete because Amazon Echo can listen, which majority of the population prefers to use their own voice.