Next-generation AR technology transforms any surface into a touchscreen without the need for specialized equipment.

      No more floating keyboards or uncomfortable arms. Just tap your desk and start working.

      Typing on a virtual keyboard suspended in mid-air seems appealing until your arms tire. This is the experience many users of AR (augmented reality) and MR (mixed reality) headsets encounter today. You either struggle with handheld controllers or have to hold your hands aloft for extended periods, leading to fatigue.

      Researchers at Tohoku University believe they have found a better solution. The team created a system that transforms any flat surface into a touch input area for AR and MR headsets. There are no additional sensors, special markers, or setup required.

      How does it function?

      When you press your fingertip against a hard surface, the skin under your fingertip briefly turns white. This is known as the blanching effect, and the researchers have devised a method to detect it using the cameras on the headset.

      Tohoku University

      The researchers trained an AI model to recognize this color change in real time. When the camera detects the blanching effect, it registers a touch input, which corresponds to whatever is displayed on the surface in the AR environment.

      “This research indicates that ordinary surfaces around us, such as walls, desks, or partitions, can serve as a touch input area,” explained Guanghan Zhao, the lead researcher. “Furthermore, this approach does not require special sensors, markers, or extra devices. It is accessible for anyone to use.”

      Does it perform effectively?

      User studies in the research confirmed that the system reliably detected touch inputs on various common surface materials, and participants completed interaction tasks accurately.

      Tohoku University

      “Our main goal was to create a technology that facilitates touch input on everyday physical surfaces for AR and MR without relying on specialized hardware,” stated Guanghan. Additionally, resting your fingers on a surface is far more comfortable than keeping your hands raised.

      The findings were shared at the 33rd IEEE Conference on Virtual Reality and 3D User Interfaces in South Korea last week, and the paper has been accepted for publication in the IEEE Computer Society Digital Library.

      Rachit is an experienced tech journalist with over seven years of expertise in covering the consumer technology landscape.

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