Our signature is an extension of our identity. It stands as a guarantee behind what we state and seals our agreement to the content mentioned on paper. A signature is extremely important in valid documents such as passport, banking, official letters, and other equally vital paperwork. A signature is unique for every individual though there are many who try to forge signatures. Currency notes include a signature of the top authority in finance. A signature can either be written representing the full name clearly or it may just be a shortened version that may appear illegible to read. Signing on the dotted line must never be done without reading what the contents are.