To enter Starbright fun parlour you need to obtain a ticket form the ticket office and then present it to the person at the entrance. To obtain the ticket you go the ticket office where you receive a pre-numbered ticket on payment of the ticket price. When the door attendant receives the ticket he tears off the stub and gives it to the customer and puts the rest of the ticket in a locked container.

Identify and explain two internal control principles that you feel are present in this scenario.