In the interests of enhanced privacy, some third-party iOS apps include an option to require passcode or Face ID authentication before they can be opened, even though the iPhone is already unlocked. This puts the app's contents behind an additional layer of security, but not all apps offer the same facility.

iphone passcode green
Until recently, Apple did not offer a way to individually lock sensitive apps like Photos, and iPhone users had to resort to Screen Time's App Limits as a workaround. Fortunately however that's no longer the case, because you can now create an additional security barrier for any app on your iPhone using a shortcut action that's included in iOS 16.4 and later.

Apple has added several more actions to the Shortcuts app, and the one that interests us here is Lock Screen. The Lock Screen action essentially allows you to set up a personal automation that automatically locks your iPhone when a specified app is opened.

Of course, this action should pose no access issues for you as the iPhone owner, but it does mean that anyone else trying to open the app first needs to pass facial authentication or enter your passcode even though your iPhone was unlocked when they tapped the app icon.

The following steps guide you through the process of setting up a personal automation that will instantly lock your iPhone when the app of your choosing is opened.

  1. Launch the Shortcuts app, tap the Automation tab at the bottom of the screen.
  2. Tap the + button in the top-right corner, then scroll down the menu of options and choose App.
  3. On the next screen, tap Choose to select an app from the list of apps, then tap Done.
  4. Make sure Is Opened and Run Immediately are selected, then tap Next.
    shortcuts

  5. Start typing "Lock Screen" into the text field and select Lock Screen when it appears in the results below.
  6. You should see your new automation "When [app] is opened, Lock screen" added to the Automations list.
    shortcuts

Your personal automation is now complete and should automatically spring into action the next time you open the chosen app.

Top Rated Comments

multipasser Avatar
13 months ago
oh waw!!!! so easy and userfriendly.

Ffs.. without a how-to not a single user will ever figure this out.
Score: 29 Votes (Like | Disagree)
klasma Avatar
13 months ago
Hopefully Apple will add this as a simple app toggle in Settings at some point.
Score: 29 Votes (Like | Disagree)
klasma Avatar
13 months ago
You’d probably also want to do this for the Shortcuts app itself, to prevent someone from disabling the automation.

Edit: And it turns out you can’t do that, see downthread.
Score: 23 Votes (Like | Disagree)
klasma Avatar
13 months ago

This workaround sounds promising -- but doesn't it just use the same spied passcode that thieves used to unlock the phone in the first place?
The use case here is when you give someone your unlocked phone, e.g. to play a game, that they don’t also get access to your sensitive data. Or when you leave your phone unlocked for a minute somewhere by accident.

This will be fun for law enforcement trying to inspect your phone, by the way.
Score: 18 Votes (Like | Disagree)
MacProFCP Avatar
13 months ago
If only you could set this to be a different passcode then the one used to unlock your phone.
Score: 17 Votes (Like | Disagree)
ignatius345 Avatar
13 months ago
This workaround sounds promising -- but doesn't it just use the same spied passcode that thieves used to unlock the phone in the first place?
Score: 16 Votes (Like | Disagree)

Popular Stories

iOS 18 Siri Integrated Feature

iOS 18 Will Add These New Features to Your iPhone

Friday April 12, 2024 11:11 am PDT by
iOS 18 is expected to be the "biggest" update in the iPhone's history. Below, we recap rumored features and changes for the iPhone. iOS 18 is rumored to include new generative AI features for Siri and many apps, and Apple plans to add RCS support to the Messages app for an improved texting experience between iPhones and Android devices. The update is also expected to introduce a more...
iGBA Feature

Game Boy Emulator for iPhone Now Available in App Store Following Rule Change [Removed]

Sunday April 14, 2024 8:06 am PDT by
A week after Apple updated its App Review Guidelines to permit retro game console emulators, a Game Boy emulator for the iPhone called iGBA has appeared in the App Store worldwide. The emulator is already one of the top free apps on the App Store charts. It was not entirely clear if Apple would allow emulators to work with all and any games, but iGBA is able to load any Game Boy ROMs that...
iGBA Feature

Apple Removes Game Boy Emulator iGBA From App Store Due to Spam and Copyright Violations

Sunday April 14, 2024 9:22 pm PDT by
Apple today said it removed Game Boy emulator iGBA from the App Store for violating the company's App Review Guidelines related to spam (section 4.3) and copyright (section 5.2), but it did not provide any specific details. iGBA was a copycat version of developer Riley Testut's open-source GBA4iOS app. The emulator rose to the top of the App Store charts following its release this weekend,...
iOS 18 Siri Integrated Feature

Apple's First AI Features in iOS 18 Reportedly Won't Use Cloud Servers

Sunday April 14, 2024 9:52 am PDT by
Apple's first set of new AI features planned for iOS 18 will not rely on cloud servers at all, according to Bloomberg's Mark Gurman. "As the world awaits Apple's big AI unveiling on June 10, it looks like the initial wave of features will work entirely on device," said Gurman, in the Q&A section of his Power On newsletter today. "That means there's no cloud processing component to the...
new best buy blue

Best Buy Opens Up Sitewide Sale With Record Low Prices on M3 MacBook Air, iPad, and Much More

Saturday April 13, 2024 7:41 am PDT by
Best Buy this weekend has a big sale on Apple MacBooks and iPads, including new all-time low prices on the M3 MacBook Air, alongside the best prices we've ever seen on MacBook Pro, iPad, and more. Some of these deals require a My Best Buy Plus or My Best Buy Total membership, which start at $49.99/year. In addition to exclusive access to select discounts, you'll get free 2-day shipping, an...
m3 mbp space black

M4 Macs Are Expected to Launch in This Order Starting Later This Year

Sunday April 14, 2024 10:40 am PDT by
Bloomberg's Mark Gurman recently reported that the first Macs with M4 series chips will be released later this year, with more models to follow next year. In his Power On newsletter today, Gurman shared a more specific roadmap for these Macs. Here is the order in which Gurman expects the Macs to launch:1. A low-end 14-inch MacBook Pro with the M4, coming around the end of 2024. 2. A 24-inch ...
top stories 13apr2024

Top Stories: M4 Mac Roadmap Leaked, New iPads in Second Week of May, and More

Saturday April 13, 2024 6:00 am PDT by
Apple's hardware roadmap was in the news this week, with things hopefully firming up for a launch of updated iPad Pro and iPad Air models next month while we look ahead to the other iPad models and a full lineup of M4-based Macs arriving starting later this year. We also heard some fresh rumors about iOS 18, due to be unveiled at WWDC in a couple of months, while we took a look at how things ...
iOS NES Emulator Bimmy Feature

NES Emulator for iPhone and iPad Now Available on App Store [Removed]

Tuesday April 16, 2024 11:33 am PDT by
The first approved Nintendo Entertainment System (NES) emulator for the iPhone and iPad was made available on the App Store today following Apple's rule change. The emulator is called Bimmy, and it was developed by Tom Salvo. On the App Store, Bimmy is described as a tool for testing and playing public domain/"homebrew" games created for the NES, but the app allows you to load ROMs for any...