Today's AV systems provide more choice of interaction methods than ever before. Perennially popular touch technology continues to improve. "More screens are becoming multi-touch, increasing the number of simultaneous users," says Rim Posthumus, global accounts director at Mood Media. "The surface size is also increasing, up to a hundred inches diagonally." GLass technology is evolving, says Jim Wallis, head of the UKI market at Promethean. "For example, the most advanced interactive panels are moving to zero-bonded glass. By reducing the air gap between the glass and screen, the precision of the interaction is much greater than with earlier technologies." ControL interfaces are also moving on. "The tablets we use are rated for 24/7 or 16/7 operation and don't have batteries," says Graeme Hind, technical development manager at integrator, Hutchison Technologies. "Instead, they get their data and power from a single cable. This allows them to be restarted remotely, and gives remote access capabilities for central management. A lot of interactions that are familiar on personal devices are starting to feed into the control system side, such as gestures, pinch to zoom, four-finger swipe, and so on."
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