UPGRADE YOUR SKILLS: Learn advanced Swift and SwiftUI on Hacking with Swift+! >>

Setting up

This project will introduce you to three important iOS technologies together: Touch ID, Face ID and the keychain. The first two are used to identify users biometrically using the fingerprint sensor on iPhones and iPads, or the face scanner on iPhone X or similar; the latter is a secure, encrypted data storage area on every device that you can read and write to.

Of course, there's little point learning about technologies without using them, so this project will have you build a secure text editor. Users can type whatever they want and have it saved, but to read it again they'll need to unlock the app using Touch ID or Face ID.

You might remember in project 12 that I said UserDefaults is great for its simplicity but isn't good for private data. Well, the keychain is securely encrypted, so we can be assured that data we put there is safe.

This project is modeled on project 19, where you met UITextView for the first time. This means we'll need to use the same keyboard detection and adjustment code – if you already completed project 19, you might find it easiest to copy and paste your code as needed.

To get started, make a new Single View App project in Xcode named Project28.

Hacking with Swift is sponsored by Essential Developer

SPONSORED Join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer! Hurry up because it'll be available only until April 28th.

Click to save your free spot now

Sponsor Hacking with Swift and reach the world's largest Swift community!

Buy Pro Swift Buy Pro SwiftUI Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let us know!

Average rating: 5.0/5

Unknown user

You are not logged in

Log in or create account

Link copied to your pasteboard.