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Re:QR Code Degenerators: Unmasking a Crypto Scam by aloknnikhil on Thursday August 29, 2019 @12:47PM (#20831202)
iOS >= 11 has a native QR code reader in the camera.

https://support.apple.com/en-us/HT208843

EDIT: 12 -> 11 iOS version correction

Re:QR Code Degenerators: Unmasking a Crypto Scam by AdmiralAsshat on Thursday August 29, 2019 @12:54PM (#20831292)
News to me, thanks! Now I can tell my parents to scrub whatever crap they grabbed from the appstore.
Re:QR Code Degenerators: Unmasking a Crypto Scam by wlesieutre on Thursday August 29, 2019 @01:04PM (#20831400)
That support document doesn't elaborate the types of codes it can scan, here are the ones I'm aware of:

    URLs -> Safari
    Locations -> Maps
    Contacts -> Contacts
    WiFi SSID/password -> Join network
Re:QR Code Degenerators: Unmasking a Crypto Scam by tuacker on Thursday August 29, 2019 @04:51PM (#20833535)
To reduce confusion more: The QR scanner only works on the camera accessed via the lock screen, but not from the actual "Camera.app"
Re:QR Code Degenerators: Unmasking a Crypto Scam by wlesieutre on Friday August 30, 2019 @11:19AM (#20839455)
Just tested and this is not the case. In iOS 12 and iPad OS 13 it definitely works in the camera app launched from home screen.
Re:QR Code Degenerators: Unmasking a Crypto Scam by saagarjha on Thursday August 29, 2019 @01:02PM (#20831385)
iOS 11 added this, actually.