You're a company accountant and you're working in a banking job. You are provided the company's check stock to maintain in your possession, you are the only one with signature plate used in the printer to create checks / check signatures on the check stock, at the end of the month you produce all the banking journal entries and perform the bank reconciliation.

Question:

Why is it a bad idea to give one individual all those responsibilities?

What could possibly happen? If any, what improvements do you recommend to the management?