All users on Beta can update the app to see the extended limit. Now, with QR codes, users will simply be able to scan a QR code and get going.
You could also scan a QR code from an image in the gallery.
Users can also choose to share their QR codes on social media or share them within a public group - especially those looking to promote a business. Under their personal QR code, they will find a "Scan" button. This means that you'll be able change your QR code if in case it's been shared accidentally.
You can experience the QR code integration after downloading the latest WhatsApp beta (version 2.20.171) for Android directly from the Google Play Beta programme or by getting its APK file from APK Mirror. The QR code feature, which is assumed to have been in development for quite some time, will be rolled out to both iOS and Android devices, and will offer a unique QR code to every user to help add contacts easily. Users can set a password that will be used to encrypt future backups, which will also be required when they restore from any particular backup. The QR code feature is now available on WhatsApp Beta v2.20.171. This functionality is, however, limited to iPhone models starting from iPhone 6S.
It is important to note that beta versions are designed only for testing purposes, and they often contain bugs.
Elsewhere, there's also clues about the new Password Protect Backups feature. However, this shortcut won't appear if the feature isn't available for you. The second update is more significant as it adds end-to-end encryption to WhatsApp chat backups in Apple's iCloud. The goal of the feature, as its name suggests, is to protect backups that the instant messaging app creates with a password.
WhatsApp is also working on a new feature which will allow users to log into the same account across multiple devices simultaneously.
WhatsApp has added a special scan feature in the camera app in WhatsApp.