The tip has since been shared on the MacRumors forums, where another Duo owner reports it working for them. That said, grip styles vary, and it's not guaranteed to work for everyone, but intrigued users can test the tip themselves by registering additional bits of digits via Settings ➝ Touch ID & Passcode. After all, more is generally better.
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This article, "'Arguably Better Than Face ID': the iPhone Duo Touch ID Tip to Try" first appeared on MacRumors.com
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