189
Shining a light behind this metal credit card.
(thelemmy.club)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 15 May 2026
189 points (99.0% liked)
Mildly Interesting
27572 readers
468 users here now
This is for strictly mildly interesting material. If it's too interesting, it doesn't belong. If it's not interesting, it doesn't belong.
This is obviously an objective criteria, so the mods are always right. Or maybe mildly right? Ahh.. what do we know?
Just post some stuff and don't spam.
founded 3 years ago
MODERATORS
Is the squiggly line an antenna?
It connects the chip to the NFC antenna that runs around the rest of the card.
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