How can I import patterns via QR code?

I've seen tons of Animal Crossing: New Leaf patterns posted across the internet accompanied by QR codes, implying that there's a way to scan those QR codes in-game to import those designs. However, I can't find any sort of import feature in the game.
How can I scan QR codes in the game? Is it something that I have to unlock?
Best Answer
QR Codes are unlocked after presenting one character out of the four main Inhabitants to Sable, the sister working alone. This must be done with 6 presentations and are not needed to be linear visits.
QR; When ever you see a QR on the laptop, screen it with the 3DS while engaged with the QR sewing machine and they will be retrieved.
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How do I import patterns to ACNH?
If you want to add a custom design to your furniture then you can easily design a pattern in the Custom Design app on the Nook Phone. Head to the customisation screen on the workbench and select the paintbrush at the end of the available designs to directly import your own masterpieces onto fabrics and furniture.How do I use a custom design QR code?
The one you need to select for QR code scanning is the one labelled, 'Designs. ' Selecting this option will open up the QR code scanner and all that's left to do is scan your chosen QR code. Once the code is scanned, select the option to 'Save' and it will be transmitted to your copy of New Horizons.How do you import patterns in Animal Crossing New Leaf?
Once you've got a design scanned and saved inside the Nintendo Switch Online app, go back to Animal Crossing: New Horizons and open up your handy dandy in-game NookPhone, then the Custom Designs app. Once you're here, press the + button to download the design currently saved to your Nintendo Switch Online app.How to use QR codes for custom designs in New Horizons
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