InVision is a great user interface prototyping tool that turns designs into interactive mock-ups.

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High-tech security firms are also expected to gain from explosive-detection gadgets produced by InVision Technologies to Visionics' biometric security systems.

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InVision reckons there are 3, 400 sawmills worldwide big enough to benefit from their machines, and is pushing hard to develop a production model.

ECONOMIST: Chopping wood

With a wider tunnel and a stronger conveyor system running through the middle of it, one of InVision's airport machines can swallow a log.

ECONOMIST: Chopping wood

InVision, which spun off from a medical device firm in 1990, realised that it could apply the same technology to inspecting luggage at airports for hidden explosives and drugs.

ECONOMIST: Chopping wood

Stiffer security standards being imposed by America's Federal Aviation Administration mean that the market for airport scanners is likely to grow, but InVision set out two years ago to look for further possible applications of its technology.

ECONOMIST: Chopping wood

General Electric (nyse: GE - news - people ) has agreed to acquire bomb-detection company InVision Technologies (nasdaq: INVN - news - people ), and has until Dec. 27 to close on the deal.

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