autograph
In this work I autograph books with the signatures of their authors. I make up a signature that I think imitates the style of their writing. I furtively 'perform' this action in used bookstores to in-store books, and leave the books on the shelf following their autograph. The value and circulation of a falsely autographed book indistinguishably separates the authenticating mark of the author's hand from the defacement of an intruder.