Can a magnet destroy an NFC chip, and the bank credit card?

No, a normal magnet will not destroy an NFC chip or the chip inside a bank credit card.

1. NFC Chip (Contactless Chip)

An NFC chip works through magnetic induction and contains:

a silicon microchip

a coil antenna

These components are electronic circuits and are not affected by static magnetic fields from normal magnets.

Typical NFC chips such as those based on NXP NTAG213 or NXP MIFARE DESFire will not be erased or destroyed by magnets.

To damage an NFC chip, you would usually need:

very strong electromagnetic fields

high voltage

physical damage

extreme heat

A fridge magnet or small permanent magnet will not harm it.

2. Bank Credit Card Chip (EMV Chip)

The chip on a credit card is an integrated circuit, part of the EMV system.

Like NFC chips, it is solid-state electronics, so magnets do not erase or damage it.

3. Magnetic Stripe (This Can Be Damaged)

Older bank cards still include a magnetic stripe.

This stripe stores data using tiny magnetic particles, which can be altered by strong magnets.

If a strong magnet changes the magnetic pattern:

the stripe may become unreadable

card swiping may fail

But this does not affect the chip or NFC function.

4. Why People Think Magnets Destroy Cards

This misconception comes from the era when most cards used only magnetic stripes.

Modern cards usually contain three technologies:

Magnetic stripe

Chip (EMV)

Contactless NFC

Only the magnetic stripe is vulnerable to magnets.

✅ Summary