Which of the following is a physical security control that protects Automated Teller Machines (ATM)...

 A secure card reader is a physical security control that protects ATM from skimming, which is a type of fraud where a device is attached to the card slot of an ATM to capture the data from the magnetic stripe of the card1. A secure card reader can prevent skimming by encrypting the data at the point of entry, making it unreadable by the skimming device. Anti-tampering, RF scanner, and IPS are not physical security controls that protect ATM from skimming, as they do not prevent the capture of the card data by the skimming device. References: 1: CISSP For Dummies, 7th Edition, Chapter 9, page 249.