For most popular large-format touch technologies "touch position" is calculated when a finger interrupts an optical field, infrared light beams or acoustic waves on or above the surface of the touch screen substrate. Relying on these "active" surface properties makes these technologies susceptible to different types of interference or environmental limitations, which makes 3M's Dispersive Signal Technology (DST) a fundamentally different touch solution for large-format display applications.

What's different about 3M DST is that it precisely calculates touch locations by analyzing the bending waves within the glass substrate that are created by the user's touch. This allows for fast, accurate, reliable touch performance that is unaffected by contaminants, scratches, or static objects on the screen, as well as enabling stylus support and multi-user capability.

Available in sizes from 32" to 47"