Unlike conventional forms of camouflage, the images on the hull would change in concert with the changing environment always insuring that the vehicle remains disguised .Invisible Tanks Could Be On Battlefield Within Five Years -- The Telegraph
British military scientists plan to develop an army of "invisible" tanks ready for use on the battlefield within five years.
Armoured vehicles will use a new technology known as "e-camouflage" which deploys a form "electronic ink" to render a vehicle "invisible".
Highly sophisticated electronic sensors attached to the tank's hull will project images of the surrounding environment back onto the outside of the vehicle enabling it to merge into the landscape and evade attack.
The electronic camouflage will enable the vehicle to blend into the surrounding countryside in much the same way that a squid uses ink to help as a disguise.
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My Comment: What can I say, but a look into Britain's military future (maybe).