Use Touch ID, Face ID or Pin to Authenticate (Local Authentication) for Expo React Native Apps

Hi everyone!

Today I'm going to show you how to authenticate using expo's local authentication package which allows users to authenticate using the local authentication method of the device, e.g. Touch ID, Face ID or Pin Authentication. Or any other local authentication method that can be configured.

I will also show you how to build a standalone client for iOS which is required to check that Face ID is working.

If you are interested in my code from this expo-local-authentication tutorial today, you can find it on GitHub:

For full documentation on authenticating using local authentication in Expo apps:

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// ABOUT ME
My name is Chelsea and I started studying software engineering in 2010. I have been working commercially full time since 2014 and have been in various positions from graduate developer to tech lead to solution architect.
I'm a full stack developer with a lot of experience in C# and Javascript but my passion is for mobile development; specifically native iOS development and cross platform using React Native.

I always have many things on the go and am always trying out a new side hustle and failing at it; perhaps you can learn from my mistakes!

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//CRAVING MORE:

[ElMauriDev]

Hay de esto pero para React NAtive Cli? No encuentro una libreria que funcione..

[bojanchurlinov]

Thanks @MissCoding, keep up the good work you are doing

[dixon]

Excellent video, it saved me alot of time researching the proper way to implement this

[alexleonardorodriguez]

this is very helpful! im glad i found you!, thanks a lot.

[rodrigocardoso]

Hello, congratulations on the content, it was excellent. Now my question is on Android, how can I do facial authentication with react?

[LukeSchaffel-upsu]

Any way to do the IOS build with out a paid dev account?

[atlxzsx]

im testing the NSFaceIDUsageDesciption message however on the app that ive built it wont display because ive allowed faceid to be enabled already. However even after i delete the app from my phone and reinstall via expo standalone. the message will not appear. How do you get your device to behave as if its opening an app for the first time again?