Swami Gimmick Book & Gimmicks

There are some effects in conjuring that
convey to the lay audience an impression
of "real magic" devoid of any props or
apparatus and apparently working by
some supernatural means. Amongst
these are various categories of mental
magic including predictions. One of the
best gimmicks ever created for
predictions is the Swami Gimmick aka
nail writer. The gimmick allows the
performer to write the prediction long after
it was supposed to have been made!