There will be people who want to borrow your Phone, from the nephew who wants to play video games for a short while to the friend who wants to see your vacation pictures to the stranger who needs to build a name. If you think about everything your Phone gives you Access to—social media accounts, financial information, in-person messenger discussions, pictures, and videos you’d like the world not to see—that poses a serious privacy and security risk.

There are ways to talk to someone on the phone, though, without having to worry about what they might say or do. Just make sure you’ve taken a few measures prior to the transaction taking place. You’ll want to learn more about the Guided Access feature on the iPhone, which you can enable by going to the iOS Settings and choosing Accessibility and Guided Access. Simply activate the Guided Access toggle switch to enable the feature; remember to utilize Passcode Settings to specify a passcode to secure Guided Access mode. If your iPhone doesn’t have a home button, you’ll need to triple-tap the side button if it does or the home button if it does to turn on Guided Access. Following that, you can tap Options to customize Guided Access’ operation: For example, you can forbid users from using the software keyboard or the quantity buttons. You can even disable touchscreen functionality and limit Guided Access mode. Start opens Guided Access when you tap it.

Anyone using the iPhone is then locked into the active app, so you must open the app in question—the Phone app, a particular game, or whatever it is—before you triple-tap the system button to start Guided Access. With another triple-tap of the same button, you can exit Guided Access. To do so, you will need the passcode you created when you first entered the program.

The idea is that without the passcode, the person using your iPhone won’t be able to exit the app you’ve put them in—there won’t be a way to switch between apps, access the Control Center, or even turn the phone off. Although they are aware of the app they are in, and what they will do there, the cost is: They will be able to access all of your photos if you show them to someone.

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