NoisyMosaic is inspired by white noise on the TV screen, when tuned to a frequency where nothing is broadcasted. In NoisyMosaic the random noise has adapted to digital age. This way the units of the noise are squares. NoisyMosaic consists of three layers. The front and back layers has the noise, and the middle layer displays the text.
The weapon of this CAPTCHA: The method is to weaken the signal. There is no frame in the animation where all letters can be identified. The different parts of the letters can be revealed through the time.