iOS 12 Includes Setting to Disable USB Access When an iPhone Hasn't Been Unlocked for More Than an Hour

In iOS 12, there's a new setting that will effectively put an end to law enforcement access to iPhones and iPads using USB devices like the GrayKey box, preventing USB accessories from connecting when it's been more than an hour since the iPhone was last unlocked.

Located under Touch ID & Passcode, the new setting, which requires a passcode to be entered to allow a USB accessory to connect after an hour, is enabled by default.

ios12usbaccessoriessetting
You can toggle off the setting to allow USB accessories to connect at any time, but most users are likely going to leave this set to the default setting as there's not a whole lot of benefit to turning it off. With this turned on, you'll need to enter your passcode for a data connection to the iPhone using a USB device, such as when you connect it to iTunes on a computer, but charging via the Lightning port will continue to work fine.

The new setting is of interest because it's an expansion of USB Restricted Mode, a feature Apple toyed with during the iOS 11.4 beta. USB Restricted Mode was designed to disable USB access to the Lightning Connector after 7 days, but iOS 12 cuts that time period way, way down.

Law enforcement officials use USB access to an iPhone or an iPad to connect accessories like the GrayKey box, a tool that plugs into the Lightning port of an iPhone and uses the data connection in an attempt to brute force a passcode.

With the new setting, an iPhone's Lightning port data connection will not work with the GrayKey box if it's been more than an hour since a passcode was entered, rendering it effectively useless unless used immediately after an iPhone is obtained from a suspect.

Law enforcement officials are likely going to be unhappy with the changes Apple is making in iOS 12 because it's going to make iOS 12 devices a lot harder to get into, but from a customer point of view, this setting offers protection from hackers and other bad actors who may be able to get ahold of this kind of technology.

Note: Due to the political nature of the discussion regarding this topic, the discussion thread is located in our Politics, Religion, Social Issues forum. All forum members and site visitors are welcome to read and follow the thread, but posting is limited to forum members with at least 100 posts.

Related Forum: iOS 12

Popular Stories

WWDC25 Live Coverage Feature 1

WWDC 2025 Apple Event Live Keynote Coverage: iOS 26, macOS Tahoe, and More

Monday June 9, 2025 9:00 am PDT by
Apple's Worldwide Developers Conference (WWDC) starts today with the traditional keynote kicking things off at 10:00 a.m. Pacific Time. MacRumors is on hand for the event and we'll be sharing details and our thoughts throughout the day. We're expecting to see a number of software-related announcements led by a design revamp across Apple's platforms that will also see the numbering of all of...
liquid glass

Apple Announces All-New 'Liquid Glass' Software Redesign Across iOS 26 and More

Monday June 9, 2025 10:13 am PDT by
Apple today announced a complete redesign of all of its major software platforms called "Liquid Glass." Announced simultaneously for iOS, iPadOS, macOS, watchOS, tvOS, visionOS, and CarPlay, Liquid Glass forms a new universal design language for the first time. At its WWDC 2025 keynote address, Apple's software chief Craig Federighi said "Apple Silicon has become dramatically more powerful...
maxresdefault

Everything Apple Announced at WWDC 2025 in 9 Minutes

Monday June 9, 2025 5:21 pm PDT by
At today's WWDC 2025 keynote event, Apple unveiled a new design that will inform the next decade of iOS, iPadOS, and macOS development, so needless to say, it was a busy day. Apple also unveiled a ton of new features for the iPhone, an overhauled Spotlight interface for the Mac, and a ton of updates that make the iPad more like a Mac than ever before. Subscribe to the MacRumors YouTube channel ...
iPadOS 26 Apple Newsroom

Apple Says iPadOS 26 is Compatible With These iPad Models

Monday June 9, 2025 11:22 am PDT by
Apple today announced that iPadOS 26 will be compatible with the iPad models listed below. iPadOS 26 features a new Liquid Glass design, a menu bar, improved app windowing, and more. iPadOS 26 supports the following iPad models:iPad Pro (M4) iPad Pro 12.9-inch (3rd generation and later) iPad Pro 11-inch (1st generation and later) iPad Air (M2 and later) iPad Air (3rd generation and...
iPhone Car Key WWDC 2025

Apple Says These 13 Vehicle Brands Will Soon Offer iPhone Car Keys

Monday June 9, 2025 2:38 pm PDT by
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further. During its WWDC 2025 keynote today, Apple said that 13...
AirTag Backpack

New AirTag With Three Upgrades is 'Nearly Ready' to Launch

Sunday June 8, 2025 11:44 am PDT by
Apple's long-rumored AirTag 2 might be coming soon. In his Power On newsletter today, Bloomberg's Mark Gurman briefly mentioned that a new AirTag is "nearly ready" to launch. Last year, he said that it would be released around the middle of 2025, and the midpoint of the year is just a few weeks away. "The new AirTag is nearly ready, having been prepared for launch over the past several...
Apple WWDC25 iOS 26 hero 250609

Apple Announces iOS 26 With 'Liquid Glass' Design, Live Translation, Overhauled Phone App, and More

Monday June 9, 2025 11:00 am PDT by
Apple at WWDC announced iOS 26, introducing a comprehensive visual redesign built around its new "Liquid Glass" concept, alongside expanded Apple Intelligence capabilities, updates to core communication apps, and more. Liquid Glass is a translucent material that reflects and refracts surroundings to create dynamic, responsive interface elements, according to Apple. The new design language...

Top Rated Comments

Khedron Avatar
92 months ago
In before that guy who's been professionally cracking iOS for a decade tells us he already knows how to bypass this setting.
Score: 57 Votes (Like | Disagree)
Mr. Heckles Avatar
92 months ago
This is just awesome! I’m glad it’s an hour and not a week.
Score: 38 Votes (Like | Disagree)
Mr. Heckles Avatar
92 months ago
what are you hiding?
i just had a 4 digit pin lol
Banking info, emails, contacts of friends and family, photos, personal info, and more. No one needs to see this info unless I let them. Period.
Score: 28 Votes (Like | Disagree)
justiny Avatar
92 months ago
I’m perfectly fine with law enforcement officials being unhappy about this.
Score: 26 Votes (Like | Disagree)
Robert.Walter Avatar
92 months ago
Should also be triggered when a phone is put into SOS mode and whenever TouchID/FaceID is disabled.

If it’s not doing that, that would seem to be an oversight.
Score: 19 Votes (Like | Disagree)
jermwhl Avatar
92 months ago
Good - **** the police
I was wondering why this was listed under "political, religious, and social issues". I guess this is why, lol.
Score: 15 Votes (Like | Disagree)