Seat belt and payment card: what they have in common

1. Step 1. Seat belt — is made of — Polyester. The webbing is polyester.
2. Step 2. Polyester — is a kind of — PET. Polyester fibre is PET.
3. Step 3. PET — is material for — Floppy disk. The disk is Mylar (PET) with a magnetic coating.
4. Step 4. Floppy disk — uses — Magnetism. Magnetic recording.
5. Step 5. Magnetism — is used in — Payment card. A magnetic stripe.

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