iOS 7.1 includes new in-app purchase alerts and security measures

Apple's recently-released iOS 7.1 update now shows a pop-up warning message for users making in-app purchases for the first time, reminding them of a 15-minute grace period in which additional purchases can be made without reentering password.

The pop-up offers direct access to iOS device Settings, where users can apply in-app purchase limitations, including an option to require passwords for every buy. Alternatively, users can turn off in-app purchasing altogether.

While the 15-minute no-password window has been in effect since the iOS App Store launched in 2008, some users may not be aware of the policy. Apple recently settled a lawsuit leveled by the U.S. Federal Trade Commission over the company's implementation of in-app purchasing.