AFAIK they put foil in between the amiibo and the bottom of the packaging to prevent people from scanning them without opening the box.Oh, a couple more questions....
Is there a way to get an amiibo to read without opening the box?
If your Wolf Link in TPHD never beat the cave of Shadows will you still be able to use the amiibo to summon him as a partner?
Wolf Link defaults to three hearts if you never played TPHD.