Telephone and payment card: what they have in common

1. Step 1. Telephone — evolved into — Mobile phone. A mobile phone keeps the function of a telephone, replacing the wire with a radio channel.
2. Step 2. Mobile phone — has part — Integrated circuit. Inside a phone are microchips: processor, memory, radio.
3. Step 3. Integrated circuit — is part of — Payment card. An EMV chip.

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