Here’s how to lock files and apps with your fingerprint

OnePlus 6 Lock icon in File Manager

Fingerprint scanners
make it easier than ever to secure your
smartphone, reducing the need to type in a PIN code every single
time. Whether you’re locking or unlocking your device, or signing
into apps, it’s certainly one of the most practical features on
today’s phones.

There’s also another use for biometric security on
smartphones, with fingerprint app lock functionality being a
popular feature these days. Whether it’s your social media app or
naughty photos, let’s look at how to lock content behind a

We’ll start with a guide on how to lock apps and content on
the OEM skins offering the feature natively, and also look at some
of the best fingerprint app lock tools in the Play Store.


Huawei was one of the first to adopt a fingerprint safe, seen on
the likes of the
Ascend Mate 7
and other phones in its stable. Locking content
behind a fingerprint has been a staple on Huawei phones and the
latest devices still offer it.

To enable the feature on your phone, you’ll want to visit
Settings > Security and privacy > Fingerprint
. From here, you enable the options for access
and access app lock.

To enable the fingerprint app lock functionality, you’ll need
to visit Settings > Security and privacy > App
, then choose which apps you’d like to hide behind a
fingerprint. Now, whenever you tap on a locked app, you’ll be
forced to authenticate using your fingerprint in order to launch
said app.

In order to access your file safe, you can visit
Settings > Security and privacy > App lock,
or open the files app and tap on Safe. If you want
to add something to the safe, open the files app, hold down on the
file in question, and tap More > Move to


The flagship manufacturer has offered fingerprint scanners since
the OnePlus
, but they’re not merely used for locking and unlocking the
phone. OnePlus
has delivered fingerprint app lock functionality for a few years
now, dubbed App Locker.

To find this feature, you’ll want to tap Settings
> Utilities > App Locker
. Enter your PIN to proceed,
and you can choose Add apps to, well, add apps.
The page also gives you a toggle to hide notifications from these
apps. Now, any time you want to launch one of these apps, you’ll
need to enter your credentials or use the fingerprint scanner.

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OnePlus also had a SecureBox feature for your
private files, but users noted last year that files could be
accessed via a separate file manager app. The company acknowledged
the issue and updated the feature a short while after, while also
giving it the Lockbox name instead.

In any case, you can find the file safe by visiting File
manager > Categories > Lockbox
. Once you’ve tapped
on it, you’ll need to enter a PIN in order to access it for the
first time, but you should be able to use the fingerprint for
subsequent attempts. To add content to your file safe, you need to
hold on the file in question, then tap Three-dot menu >
Move to Lockbox

The app lock and safe functionality on an Oppo phone.

The privacy passcode field on an Oppo smartphone.

Hiding a file on an Oppo phone.

OnePlus isn’t the only BBK brand offering biometric
recognition. Oppo‘s
recent wares have offered this functionality too.

To enable the feature, visit Settings > Fingerprint,
face and passcode > Privacy passcode
. Once you’ve
tapped the last option, you’ll find the option to Turn on
privacy passcode
. Tap the option, set a desired code,
verify said code, and choose a security question in case you forget
the code. You should probably bind an email address for peace of
mind as well.

Once you’ve completed this process, you can access both the
private (file) safe and fingerprint app lock options from the
privacy passcode menu or Settings > Security > App
lock/private safe
. Tap the app lock option to choose which
apps require a fingerprint to launch, while tapping the private
safe option lets you (surprise) view your stash of private

Unlike some other OEMs on the list, Oppo doesn’t seem to
display the file safe option inside the native file manager.
Instead, the default solution is to visit the aforementioned menus
to see it. However, you can create a homescreen shortcut by
visiting the Private safe, tapping the
Cog, and enabling the toggle for
Homescreen shortcut.


Source: FS – Android
Here’s how to lock files and apps with your fingerprint