It might sound odd that ATMs are running on aging software better suited to a home PC. In fact, security experts have chastised the financial industry for putting ATMs on a PC operating system in the first place. They argue ATMs should be using software that is scaled down and less buggy, such as Linux.
But banks long ago decided that Microsoft's familiar way of displaying windows and text would sit well with customers.
Upgrading to Windows 7 or 8 will give ATMs more of a sleek feel that resembles the latest apps on tablets and smartphones, said Jeff Dudash, a spokesman for ATM manufacturer NCR.