QR Scanner has not disclosed specific data categories it collects, based on its official Play Store privacy label.
Extracted automatically from the developer's own privacy policy text -- not independently verified by Nomatra.
“Links to privacy policies of third-party service providers used by this app Google Play Services”
“Google Play Services AdMob Google Analytics for Firebase”
“Google Analytics for Firebase”
“Firebase Crashlytics”
“Firebase Crashlytics Facebook”