Touchscreens have revolutionized user interfaces by making them more interactive. But they still lack something. Touchpads are still perceived by fingers as one solid piece of glass rather than a tangible interface. But we hasten to please you - the specialists of the Disney company have developed a new electro-vibration technology that can give touchscreens what they lack so much - tactile.
Disney even showed off several showcases of their new technology. In fact, the touchscreen coating does not change shape as it would require many moving parts to distort the image itself. Disney specialists took a different path. By varying the electrical voltage on the surface of the screen, they were able to change the sensation of rubbing a finger on the screen, which is essentially tactile feedback. Thus, sliding your finger across the screen, you can feel the three-dimensional edges and edges.
The system is controlled by a specially developed algorithm that analyzes the image gradient and the rate of change of sensor data. Based on this information, the required voltage is applied to the desired areas of the screen to increase friction, thereby creating the illusion of three-dimensional structures.
The algorithm may well be used for modeling complex objects, but it is not always possible to obtain data on the "three-dimensionality" of the image on the screen. For this, you can use 3D models of displayed objects. For example, topographic elevation maps are great and can be connected as a tactile addition to regular maps.
Unfortunately, Disney's new technology is still in the lab. But the company has all the technological and human resources necessary to bring it to mind and reduce costs. Let's hope that in the coming years we will be able to control our smartphones by touch, as we did with the good old buttons.