Dai Vernon is reported to have called Roth the greatest coin magician he has seen. According to Jamy Ian Swiss, Roth "changed coin magic for all time". Roth's trick "The Hanging Coins" (which was first revealed in
Apocalypse magazine, Volume 1, No. 6, page 68, 1978) took an ancient, and long ignored, sleight-of-hand technique and made it far more deceptive and useful. This technique, which Roth dubbed "Edge Grip", has subsequently been explored in depth by other experts in the field. It is a significant tool of contemporary coin magic. Roth's virtuoso execution of a "persistence of vision vanish" led to tremendous interest in his handling of the move (which he referred to as "The Retention Vanish"), and – perhaps – to increased use of this move among magicians. Roth's handling and application of a technique that has – largely thanks to him – become known as "The Shuttle Pass" is highly influential. Roth's "The Original Chinese Coin Assembly" was highly influential as the first published coin assembly that used the bare hands. This was a highly influential development that has been widely used and explored by other sleight-of-hand experts. ==Magic Castle awards==