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# Device Serial Number
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2016-07-20 16:25:09 -07:00
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Derive a unique, consistent serial number of this device from internal data.
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```sig
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control.deviceSerialNumber();
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```
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2016-07-21 13:29:59 -07:00
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**This is an advanced API.** For more information, see the
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[micro:bit runtime messageBus documentation](https://lancaster-university.github.io/microbit-docs/ubit/messageBus/).
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