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Questions tagged [nfc-p2p]

Peer-to-peer mode (P2P) for Near Field Communication (NFC) is a mode where two NFC devices can directly communicate with each other.

Peer-to-peer mode (P2P) for Near Field Communication (NFC) is a mode where two NFC devices can directly communicate with each other. Peer-to-peer mode is one of NFC's three operating modes (besides reader/writer mode and card emulation mode) and is standardized in ISO/IEC 18092 (NFCIP-1) and adopted by the NFC Forum's Analog and Digital protocol specifications.

NFC peer-to-peer mode supports different communication modes between two devices:

  • Active mode, where both devices alternately generate their own HF field.
  • Passive mode, where one device generates the HF field (similar to a contactless smartcard reader) and the other device operates as a passive target (similar to a contactless smartcard).
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Android NFC p2p to retrieve information

I was reading about Near Field Communication on Android and was wondering if there is any way to retrieve information from one phone by another. So this can be done in two ways : Phone(Retriever) connects via NFC to another Phone(Client). The…
Siddharth Bora
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Send a url between 2 NFC devices

I have an android application with a webview in it. When the webview is getting to url with certain text, e.g. ticket, then I would like to send the url to another NFC device through NFC. I was able to send the url to the type 4 NFC tag, but I am…
DaiLak
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Why Android & IOS11 cannot communicate via NFC

Currently using React Native and attempting to use react-native-nfc-ios and react-native-nfc so I can have cross-device communication between ios and Android. I'm finding that they cannot communicate, however I think it's due to a broader issue (as…
njho
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Can we use NFC technology to send messages (NDEF) across Android and iPhone

I am new to NFC technology, I saw many documentation which are supported to exchange message with in android using nfc tag or android beam. I wanted to know can we exchange NDEF message from android to iPhone?
Parth Shah
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Can an iPhone 7 or later using iOS 11+ act as an NFC tag?

I understand that an iPhone 7 or later will be able to read certain NFC tags under certain conditions however will an iPhone also be able to act as an NFC tag or "display"/share any sort of unique NDEF data that can be read by other devices with NFC…
Jack
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How to access the NTAG213 NFC interaction counter?

I'm working on an android app where I need to find the number of times an NFC tag was read. I've gone through the docs on the NFC forum and for NTAG213** there is a field called the MIRROR_CONF using which one can determine whether the interaction…
Roehit Kadam
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How can I read the NFC ID of another Android device?

I want to exchange (or only read) the NFC tag ID from one Android device to another but I don't know if I should use peer-to-peer mode or emulate an NFC tag with HCE. If I use HCE, is the emulated tag ID unique? What is the better option or is there…
JHoerbst
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When app receives NFC data it opens "New Tag collected"

I am creating an app where two devices communicate over NFC and then one transmits to the server. I am trying to develop this for both pre- and post-lollipop. The problem is that I create my NDEF message in one app and then receive it in another…
DJ-DOO
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Someone is actually able to exchange NDEF messages in real world apps?

I implemented an app offering an interaction between two devices based on Android Beaming. In my current implementation, the beaming functionality is unusable. When the two devices touch each other and one of them is ready to beam, a screen showing…
Antonio Sesto
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NFC modes of operation confusion

I am trying to understand the technology behind NFC. I have a basic understanding of the protocol, the physics behind the technology and the immense power it brings to the wide range of applications that could be there. Now I am trying to…
qre0ct
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NFC Reader <-> Android communication and Android listener

I have some questions about the communication between a NFC reader and an Android phone. The first subject is the Android / NFC reader modus: What is the best way to pass a unique identifier from the NFC reader (ACR122U) to an Android device?…
S.Pols
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Android NFC restart App

I use NFC to send text records from my app on device Nr.1 to my app on device Nr.2. Then the device is in touch, on both devices popup "touch to beam" UI. If I touch and beam message on device Nr.1 (sending part ot the pair) - message sent,…
user3337390
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Is it possible to transfer NFC data from one Android device to another without the 'Touch to Beam' screen?

I am trying to send NFC data from one Android device to another. I was able to do it successfully using the 'Touch to Beam' functionality. But I would like the data transfer to take place automatically as soon as both the devices are together. I saw…
unni
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NFC reader and phone: unique authentication without app

I have an NFC receiver / sender (depends on how configured)...I want to use it as an NFC receiver and when the customer holds his phone to it (I am going for Android for now), It needs to get some sort of response. As Android has 'Android Beam',…
Boy
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NFC->SNEP-> GET request NOT_IMPLEMENTED?

i need my application to answer snep (simple ndef exchange protocol) GET requests. How can i do that ? I can send PUT request succesfully; but my GET requests returns with "NOT_IMPLEMENTED" value. How can i write my application to answer that snep…
ibrahim
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