Password Authentication for Windows Store Purchases

The Purchase Sign-In feature is a useful tool for any Windows Store customers who would like to prevent accidental or unauthorized purchases from taking place. Here's a quick tip on how to enable this password verification feature. 
This tip applies to Windows 8, 8.1 and 10. 

Enable Password Prompt in Windows Store

Sign-in to your Windows session (this setting applies to your account only) and click on Start > All Apps > Store. Once the Windows Store opens, click on the small profile badge displayed at the top right corner, and select Settings: 

Scroll to the Purchase sign-in section and toggle the Streamline my purchases experienceoption Off: 

Moving forward, all Windows Store purchases will require a password validation to complete a transaction.