The BBC is reporting on a new technology being developed by a team of Japanese researchers which uses focused ultrasonic waves to produce the illusion of solid objects in mid-air to the sense of touch.

While still in its infancy, the researchers believe the technique could be used in video games to provide a more immersive experience. Audio and visual sensory input has been a major part of gaming for years, but the sense of touch has been hard to fully tap into. This technology could provide a way to more fully realized virtual experience.

However, to the blind, this technology could mean more. As the technology matures, it is easy to envision ways in which it may be used to provide tactile cues on touch screen devices like the iPhone or iPod Touch, or provide a less expensive and more easily maintained alternative to current Braille display technologies.