Windows 10 aims to converge the operating system across devices with a single kernel and app model. It improves security features like two-factor authentication and protects user data wherever it is accessed. Surface devices run Windows 10 and include the Surface Pro 3 for those needing power and a laptop replacement, and the more affordable and portable Surface 3. Both offer pen and touch input with adjustable kickstands across different screen sizes and processor options, and are designed for work as well as personal use.