gloss is just a coating on the paper and will have no bearing on the sticker. if you think about the cards, those are in a plastic sandwich.

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while i haven't specifically tried sandwiching my nfc stickers, the nfc can be read through the card stock. i use these https://smile.amazon.com/gp/product/B085ZT649N/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1