Stupid question and credit cards

[scorpion]

To answer the other question, cloning credit cards is simply not possible.

This may be interest as well:

Resonant Repeater Stickers

I want to create flex PCB stickers that are cheap and you can just slap on stuff to reshape the field to couple better with implants. I did some calculations about “on-board” capacitors that are just copper pours so we can create the stickers without needing to populate parts or add any z-height. My calculations indicate that two 1cm² copper plates on a 0.13mm thick polyimide flex PCB will create a capacitor of 22.5pF C = ε0 * εr * (A/d) 1cm2 on 0.13mm thick polyimide: C = 8.85⋅10−12 * 3.3 *…