| 翻訳と辞書 |
| Draw-a-Secret ： ウィキペディア英語版 |
Draw a Secret
Draw a Secret (DAS) is a purely graphical password selection and input scheme. The scheme replaces alphanumeric password strings, with a picture drawn on a grid. Instead of entering an alphanumeric password, this authentication method allows users to use a set of gestures drawn on a grid to authenticate. The user's drawing is mapped to a grid on which the order of coordinate pairs used to draw the password are recorded in a sequence. New coordinates are inserted to the recorded "password" sequence when the user ends one stroke (the motion of pressing down on the screen or mouse to begin drawing followed by taking the stylus or mouse off to create a line or shape) and begins another on the grid.
== Overview ==
In DAS, a password is a picture drawn free-form on a grid of size N x N. Each grid cell is denoted by two-dimensional discrete coordinates (x, y) ∈ (N ) × (N ). A completed drawing, i.e., a secret, is encoded as the ordered sequence of cells that the user crosses whilst constructing the secret.
The predominant argument in favor of graphical over alphanumeric passwords is use of the Picture superiority effect which describes the improved performance of the human mind in recalling images and objects over strings of text. This effect is utilized through DAS, as complex drawings are less difficult for the human mind to memorize than a long string of alphanumeric characters. This allows for the user to input stronger and more secure sequences through graphical password input schemes than conventional text input with relative ease.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Draw a Secret」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|