43 lines
1.1 KiB
Markdown
43 lines
1.1 KiB
Markdown
# Receive Number
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The broadcast function.
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Reads the next radio packet as a number data packet.
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## Important Security Consideration
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The functions in the ``radio`` namespace allow the BBC micro:bit to communicate with other micro:bits.
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This API does not contain any form of encryption, authentication or authorization. It's purpose is solely for use as a teaching aid to demonstrate how simple communications operates, and to provide a sandpit through which learning can take place.
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For serious applications, BLE should be considered a substantially more secure alternative.
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### Block Editor
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### KindScript
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```
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export function receiveNumber() : number
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```
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### Returns
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* packet - a number received.
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### Examples
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Broadcasts the value of ``acceleration`` x to other micro:bits.
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```
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radio.onDataReceived(() => {
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led.plotBarGraph(radio.receiveNumber(), 1023)
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})
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```
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### See also
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[send number](/microbit/reference/radio/send-number), [receive number](/microbit/reference/radio/receive-number), [on data received](/microbit/reference/radio/on-data-received), [set group](/microbit/reference/radio/set-group)
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