Recall based - reproducing a drawing

DAS(draw-a-screet) reproduced by Jermyn,et al(1999)

• Allow user to draw their unique password

• based on a two dimensial grid,user have to draw something to represent their password.

• Each of the grid coordinates from the drawn pictures is stored in the order of the drawing.

• User need to redraw again to be authenticated

• If the drawing lines up at the same grids coordinates with the proper sequence,then the user is authenticated.
  

DAS