Which of the following actions should be taken to increase security in a workplace?

Minimizing the sight of cash from customers is an effective measure for increasing security in a workplace. This action reduces the temptation for theft or robbery, as individuals cannot easily see if and when cash is available. By making cash less visible, it lowers the risk of targeted criminal activity and helps create a safer working environment for employees and customers alike.

In contrast, allowing customers behind the counter, storing cash openly at the register, and ignoring banking confidentiality pose significant risks to security. These actions can lead to increased theft, loss of sensitive information, and create an unsafe atmosphere for staff and customers.