<P> Tic - tac (also tick - tack and non-hyphenated variants) is a traditional method of signs used by bookmakers to communicate the odds of certain horses . Until the turn of the 21st century it was a very common sight on racecourses in the UK, but with the advent of mobile technology it is now seldom seen . In 1999, only three practitioners were noted to be still working on the southern UK tracks--Micky' Hokey' Stuart, Billie Brown and Rocky Roberts . A tic - tac man will usually wear bright white gloves to make his hand movements easily seen . </P> <P> A few simple examples of signals: </P>

Who uses a signalling system known as tick tack