1. "People possess a remarkable ability for recalling pictures": If anybody ever accidentally sees you drawing your passgraphics it will be easy from him/her to remember what you drew.
2. People are not good at recreating the exact same movements every time. While different versions of my natural signature look similar they are never exactly the same. The software will need to be able to cope with that. How well that works you can experience with any device using a stylus detecting handwritten characters. It typically takes me two to three attempts to enter my password on my handheld correctly that way.
What's so new about the concept? It's not really different from zig-zagging over a keyboard creating an arbitrary password.
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1. "People possess a remarkable ability for recalling pictures": If anybody ever accidentally sees you drawing your passgraphics it will be easy from him/her to remember what you drew. 2. People are not good at recreating the exact same movements every time. While different versions of my natural signature look similar they are never exactly the same. The software will need to be able to cope with that. How well that works you can experience with any device using a stylus detecting handwritten characters. It typically takes me two to three attempts to enter my password on my handheld correctly that way. What's so new about the concept? It's not really different from zig-zagging over a keyboard creating an arbitrary password.