To prevent such incidents from occurring in future, the casino should tighten its security through stationing well trained security guards at every possible entrance of the casino. This would ensure thieves would not be able to flee so easily. They should also record the transactions made from each individual counter and frisk the cashiers at the end of the day before leaving work. This measure may seem a bit extreme, but it should significantly discourage the casino's employees from trying anything funny in the future.