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Stop using your 4-digit iPhone passcode in public. Do this instead

Someone inputting their 6-digit iPhone passcode PIN.

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After months of investigating successful iPhone robberies, Apple ID erasures, and drained bank accounts, senior tech columnist for The Wall Street Journal, Joanna Stern, concluded that thieves only need that four-digit pin code you use to unlock your phone to erase your personal data.

Also: Apple working on a new iPhone SE model with bigger screen, says analyst

The problem

Here’s how they do it. The thief is oftentimes someone who befriends iPhone users at a bar. Then, they sneakily observe the users as they input their routine four-digit PIN. When the victim is the least aware, the thief tactfully swipes the phone away and inputs the passcode to unlock the device. The rest is history.

I have long thought that a successful iPhone robbery stops here because I can use a secondary device to dial into my FindMy network and track my phone.

Unfortunately, Stern’s findings confirm this isn’t the case. After unlocking the device, a thief can use the pin to reset your Apple ID. Then the thief can block the phone’s FindMy access, along with any other devices associated with the account, and access anything backed up to your iCloud.

Also: 7 ways AirTags can simplify your life

Very quickly, your hands become virtually tied as you can’t remotely wipe your device. But, the thief can now turn on a recovery key, change the trusted phone number and email address, and remove any recovery contacts. The thief can also access financial accounts and apps like Venmo or Apple Pay — all from that simple little passcode. 

Stern’s discovery left me feeling unsettled. A lot more is riding on my phone’s four-digit code than I previously realized.

The solution

Besides prioritizing the use of the iPhone’s FaceID and TouchID security measures, I found the simplest way to mitigate such risks to be making my iPhone passcode more difficult. Why not start at the root of the potential problem? 

Also: How to find and remove spyware from your phone

How to change and complicate your iPhone passcode

First, navigate to your settings and select the “Face ID & Password” option from the menu. From there, select “Change passcode.” You’ll be prompted to enter your old passcode before you create a new one. 

Screenshot of iPhone's Face ID and Passcode option

Christina Darby/ZDNET

While a six-digit passcode is harder to memorize than a four-digit one, I’d recommend taking things a step further by using an alphanumeric (lettered code) password. 

Select “Passcode options” and choose “Custom Alphanumeric Code.” For the best security, pick a word or phrase that is hard to remember at first glance.

Also: Change this one iPhone setting to foil thieves from stealing your phone and selling it

It might be a pain to type out “imsmarterthanathief” every time you go to check a message, but if it’s an effort for you, it might be just as much for the thief. 

Screenshot showing someone changing an iPhone password to an alphanumeric code

Christina Darby/ZDNET

Bottom line

No matter where you are, your iPhone’s biometric security measure (FaceID or TouchID) should be your default method of unlocking. If you do find yourself needing to unlock via a numeric or alphanumeric code, make sure you do so privately, shielding the process from prying eyes. And if you’re too drunk to remember a more complicated passcode, perhaps it’s time to go home.


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