For the Following Situation,state Whether It Represents a Strength or Weakness

For the following situation,state whether it represents a strength or weakness in internal control and give the reason for your answer.
The movie theater has the following policy.Tickets are sold by the cashier.The ticket stubs are collected by the ticket taker.The ticket stubs are stored in a locked box,and the accounting personnel match the number of ticket stubs to the number of tickets sold.