Samsung ProXpress M458x Series User Manual page 336

Using the NFC feature (Optional)
5 Tag your mobile device (usually located on the back of the mobile
device) over the NFC tag (
Wait few seconds for the mobile device to send a job to the printer.
For some mobile devices, NFC tag might not be located at the back of the
mobile device. Check the location of the NFC antenna on your mobile
device before tagging.
The printer starts faxing the content.
6
) on your printer.
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3. Network Setup