Lock screen ad-supported refers to a feature found on some Amazon devices, such as Kindle e-readers and Fire tablets, where the lock screen or screensaver displays personalized ads based on the users shopping preferences and browsing habits on Amazon. This feature is offered on ad-supported versions of these devices, which are sold at a reduced price compared to ad-free versions. The ads are effectively the lock screen wallpaper, showing ebooks and products that Amazon thinks the user will want to buy. The ads are not too intrusive and are well-targeted. If a user wants to remove the lock screen ads, they can do so by paying a fee, which is no more than the difference between the ad-supported and ad-free versions of the device.