good - field communicating ( NFC ) allow very short - reach transmission of datum from a twist that can be barrage - liberal . The bailiwick generator by the NFC lector produces the diminutive amount of power required to trip a signal . Starting with AirTag support in the iPhone half a dozen in 2015 , all iPhone mannikin have had some form of ability to activate and read NFC tag . ( Starting with ever earlier iPhones , all Watch models , andmany iPads , NFC transmission or encoding is used for Apple Pay . )

You might have received certain kind of NFC tag presentment . The most common are :

One reader found that they receive repeated notifications for a payment service even when their phone was apparently nowhere near any NFC equipment . It ’s troubling , and they have n’t determine the source . But what ’s unfit is these site tag notifications ca n’t be disabled .

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This unknown tag kept pestering a reader.

In fact , only App Clips can be disabled , and only then by enabling a feature of speech in Screen Time . Here ’s how :

This Mac 911 article is in reply to a dubiousness submitted by Macworld reader Erin .

Ask Mac 911

We ’ve compiled a list of the query we get necessitate most often , along with reply and tie to column :   read our super FAQ   to see if your interrogation is covered . If not , we ’re always looking for newfangled problems to lick ! netmail yours tomac911@macworld.com , let in CRT screen captures as appropriate and whether you want your full name used . Not every question will be answer , we do n’t reply to email , and we can not provide unmediated troubleshooting advice .

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This unknown tag kept pestering a reader.