Security hologram and fuel cell: what they have in common

1. Step 1. Security hologram — is part of — Payment card. A hologram.
2. Step 2. Payment card — uses — NFC. Contactless cards.
3. Step 3. NFC — is used in — Continuous glucose monitoring. Glucose sensor data is read with a phone over NFC.
4. Step 4. Continuous glucose monitoring — is made of — Platinum. The sensor is a platinum electrode.
5. Step 5. Platinum — is material for — Fuel cell. A platinum catalyst.

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