No doubt, Visually Impaired (VI) have trouble signing documents. They cannot identify their signatures
and have their identification verified. Hence, some people may impersonate their identity. They may imitate their
signatures in formal documents like contracts, money checks, and other vital documents, mainly in the governmental
institutions. No clarified method can maintain these signatures. This paper presents a new prototype for securing VI
people's signature using encryption techniques and data hiding methods. The proposed prototype uses the Least
Significant Bit (LSB) algorithm for hiding some information, including the name of VI, the date, and the time of the
signature. These data are encrypted using an improved, chaotic algorithm with a linear feedback shift register approach.
Moreover, a QR code for each VI person is created and associated with the document. Both the signature and the QR
code can be used to secure and validate the VI signature for a given document. A real signature dataset is constructed
for evaluating the proposed prototype. The experimental results with respect to the real dataset and the Spanish
signature dataset (MCYT-100) proved that the superiority of the proposed prototype. |
