Works very well. My son has a Nintendo 3DS without the ability to read amiibo. The new 3DS and WiiU read information from amiibo. He didn't want to invest in a new 3DS, but making money to buy that reader was a more achievable goal. It took him a few months of hard work to earn enough to buy it, but now both of his devices read amiibo. He himself synced it to his 3DS (he's 11 years old) and it's been running flawlessly for over a month now.
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