If you store sensitive files or documents in Google Drive and also prefer to open them via iPhone or iPad, you now have some advanced security options to keep them safe. The latest Drive app update for iOS and iPadOS includes a "Privacy Screen" switch, which requires a biometric scan before opening the app.
The security function works with Touch ID (fingerprint) or Face ID, and users can set the app to lock immediately when switching or wait ten seconds, one minute or ten minutes. The feature has been added to version 4.2020.1
Oddly enough, this is a feature completely new to Drive on mobile. Even the Drive app on Android doesn't offer it, despite Google's proprietary mobile platform that natively supports fingerprints and facial scans. But Google's mobile development teams often work independently – we may see the feature coming to Android soon.