 Most forms of camouflage are made ineffective by movement : a deer or grasshopper may be highly cryptic when motionless , but instantly seen when it moves . But one method , motion dazzle , requires rapidly moving bold patterns of contrasting stripes . Motion dazzle may degrade predators ' ability to estimate the prey 's speed and direction accurately , giving the prey an improved chance of escape . Motion dazzle distorts speed perception and is most effective at high speeds ; stripes can also distort perception of size ( and so , perceived range to the target ) . As of 2011 , motion dazzle had been proposed for military vehicles , but never applied . Since motion dazzle patterns would make animals more difficult to locate accurately when moving , but easier to see when stationary , there would be an evolutionary trade @-@ off between motion dazzle and crypsis . 
