Mildly Interesting

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Shining a light behind this metal credit card. (lemmy.world)

submitted 3 hours ago by violentfart@lemmy.world to c/mildlyinteresting@lemmy.world

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[–] IcedRaktajino@startrek.website 14 points 3 hours ago (2 children)

Is the squiggly line an antenna?

[–] slazer2au@lemmy.world 15 points 3 hours ago

It connects the chip to the NFC antenna that runs around the rest of the card.

[–] violentfart@lemmy.world 8 points 3 hours ago* (last edited 35 minutes ago)

I thought so at first, but since this card is metal I’m assuming it has something to do with adding the chip during manufacturing.

Edit: from the other comment, it likely breaks up continuity of the metal card so NFC energy flows into the antenna instead of being absorbed by the metal card itself