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Noun; The randomized text entry that is required in the process of proving authenticity on a web page, usually displayed in a text box containing some or all of the following elements:

erratic lines

disproportionate letter sizes

diffusing visuals

animated images

randomized elements

numerical values

audio playback
Examples of text and numerical combinations found in a Schipledoink: hlvnkt, pvtcw8, enxt9n etc...
by Mallius February 17, 2010