▲ 179 ▼ Shining a light behind this metal credit card. (lemmy.world) submitted 5 months ago by violentfart@lemmy.world to c/mildlyinteresting@lemmy.world 18 comments fedilink hide all child comments
[–] Hellstormy@lemmy.dbzer0.com 13 points 5 months ago* I recently took an x-ray of a card, might be interesting to some of you as well: permalink fedilink source