One of the most notable applications of ultrasound in display technology is the creation of haptic feedback. By generating focused ultrasound waves, these displays can simulate tactile sensations on the user's fingertips without any physical contact. This technology allows users to "feel" virtual buttons, textures, and other interactive elements directly on the display surface. The precision and versatility of ultrasound waves enable a wide range of tactile sensations, from smooth to textured surfaces, enhancing the user experience in interactive kiosks, gaming, and virtual reality environments.

Ultrasound technology facilitates three-dimensional interaction with displays by detecting hand movements and gestures in the space in front of the screen. This capability transforms the way users interact with digital content, enabling more intuitive and natural gesture-based controls. It can be used for navigating menus, rotating or zooming in on images, and even playing games, creating a more immersive and engaging experience without the need for physical touch or additional hardware.

Ultrasound fingerprint sensors represent a cutting-edge biometric technology that has gained prominence for its enhanced security features and superior performance over traditional fingerprint scanning methods. This technology utilizes high-frequency sound waves to capture detailed images of the fingerprint patterns, including ridges and valleys, as well as the unique characteristics of the skin, such as pore patterns.