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Method and system of constructing and authenticating password incorporating writing features Disclosure Number: IPCOM000238128D
Publication Date: 2014-Aug-04
Document File: 3 page(s) / 52K

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The Prior Art Database


This article presents a method of enhancing password security by encoding handwriting pattern as part of password. During authentication, not only password plain text need to match, but also the handwriting pattern. This increases password security significantly while making it easy for users to remember passwords. As password becomes multi-dimensional, there are many handwriting features, and each of them is one dimension of the password. The handwriting features are classified into two categories: - Procedure feature: writing speed, writing pressure, stroke order etc. - Result feature: character size, shape, position etc.

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Method and system of constructing and authenticating password incorporating writing features

Password security is often a concern for users. To make passwords more secure and harder to attack, users often use more characters, mixtures of digits and letters, and mixed cases in passwords. However such kinds of password become hard to remember. With the common use of devices that have multi-touch screens and virtual keyboards, such as mobile devices, tablets etc., it has become less desirable to type in long passwords due to the small size of the keys. It is also time-consuming to switch from letters to digits, upper case to lower case and vice-versa on virtual keyboards. Using fingers on these multi-touch screens, using digital pen or tablet as an alternative to virtual keyboards are becoming more common to input characters.

    This disclosure tries to solve the problem of how to make a password more secure and at the same time easy to input, especially for use on the above-mentioned devices.

    Prior art in this area is mainly concerned with handwriting or signature recognition. This is usually to authenticate a user based on the written sample. The current disclosure is different because it concerns not merely handwriting recognition, it is the use of characteristics of handwriting, which may or may not be natural, as an additional method of encoding a password, which is novel.

    On multi-touch screens or devices such as digital pens and tablets, users could incorporate unique personal writing characteristics such as the size, pressure, speed, and direction of their writing, as part of their password input. Someone may deliberately incorporate an uncommon writing style into their written password, such as using an extra large second character. These individual characteristics can be captured, combined with the password text and used for authentication purposes.

    This disclosure presents a method and system to incorporate thes...