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Instead of typing or copying and pasting one-time passcodes (OTP) from the Authenticator Google Chrome Extension, you can set it up to automatically fill the code into the designated spot.
- Click on the Authenticator extension
- Click on the wheel in the upper left corner
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- Select "Preferences"
- Toggle the button next to "Use Autofill" so that it is blue
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- Click the x in the upper left corner
You're all set!