Rumors surfaced earlier today about the 3DS NFC accessory being potentially region locked. In an email sent to a customer, the retailer claimed that the Japanese product wouldn’t work on a North American system.
It turns out that Play-Asia was incorrect in this case. Someone put things to the test, and has shown the Japanese reader working with a North American 3DS. That should end all speculation!
— Amiibo Alerts (@AmiiboAlerts) July 30, 2015