NFC Tag contact (#1537)

Localizable.xcstrings

@@ -10693,6 +10693,10 @@
         }
       }
     },
+    "Create Node Contact NFC Tag" : {
+      "comment" : "A section header that instructs the user to create a contact NFC tag.",
+      "isCommentAutoGenerated" : true
+    },
     "Create Waypoint" : {
       "localizations" : {
         "de" : {
@@ -27747,6 +27751,10 @@
         }
       }
     },
+    "Node Name: %@" : {
+      "comment" : "A text label displaying the name of the connected node.",
+      "isCommentAutoGenerated" : true
+    },
     "Node Number" : {
       "localizations" : {
         "de" : {
@@ -44139,6 +44147,9 @@
           }
         }
       }
+    },
+    "Tools" : {
+
     },
     "Topic: %@" : {
       "localizations" : {
@@ -48733,6 +48744,10 @@
         }
       }
     },
+    "Write Contact to NFC Tag" : {
+      "comment" : "A button that writes a contact to an NFC tag.",
+      "isCommentAutoGenerated" : true
+    },
     "x" : {
       "localizations" : {
         "es" : {
@@ -49444,4 +49459,4 @@
     }
   },
   "version" : "1.1"
-}
+}

Meshtastic/Info.plist

@@ -97,6 +97,8 @@
 	<true/>
 	<key>LSSupportsOpeningDocumentsInPlace</key>
 	<true/>
+	<key>NFCReaderUsageDescription</key>
+	<string>We use NFC tags to share node contacts</string>
 	<key>NSBluetoothAlwaysUsageDescription</key>
 	<string>We use bluetooth to connect to nearby Meshtastic Devices</string>
 	<key>NSBluetoothPeripheralUsageDescription</key>

Meshtastic/Meshtastic.entitlements

@@ -9,6 +9,10 @@
 	</array>
 	<key>com.apple.developer.carplay-communication</key>
 	<true/>
+	<key>com.apple.developer.nfc.readersession.formats</key>
+	<array>
+		<string>TAG</string>
+	</array>
 	<key>com.apple.developer.usernotifications.critical-alerts</key>
 	<true/>
 	<key>com.apple.developer.weatherkit</key>

Meshtastic/Router/NavigationState.swift

@@ -52,6 +52,7 @@ enum SettingsNavigationState: String {
 	case debugLogs
 	case appFiles
 	case firmwareUpdates
+	case tools
 }
 
 struct NavigationState: Hashable {

Meshtastic/Views/Settings/Settings.swift

@@ -355,6 +355,13 @@ struct Settings: View {
 						Image(systemName: "gearshape")
 					}
 				}
+				NavigationLink(value: SettingsNavigationState.tools) {
+					Label {
+						Text("Tools")
+					} icon: {
+						Image(systemName: "hammer")
+					}
+				}
 				NavigationLink(value: SettingsNavigationState.routes) {
 					Label {
 						Text("Routes")
@@ -521,6 +528,8 @@ struct Settings: View {
 					AppData()
 				case .firmwareUpdates:
 					Firmware(node: node)
+				case .tools:
+					Tools()
 				}
 			}
 			.onChange(of: UserDefaults.preferredPeripheralNum ) { _, newConnectedNode in

Meshtastic/Views/Settings/Tools.swift

@@ -0,0 +1,164 @@
+//
+//  Tools.swift
+//  Meshtastic
+//
+//  Created by Benjamin Faershtein on 12/31/25.
+//
+
+import SwiftUI
+import CoreNFC
+import MeshtasticProtobufs
+import OSLog
+
+struct Tools: View {
+	@EnvironmentObject var accessoryManager: AccessoryManager
+	@Environment(\.managedObjectContext) var context
+
+	@StateObject private var nfcReader = NFCReader()
+
+	var connectedNode: NodeInfoEntity? {
+		if let num = accessoryManager.activeDeviceNum {
+			return getNodeInfo(id: num, context: context)
+		}
+		return nil
+	}
+
+	var qrString: String {
+		var contact = SharedContact()
+		contact.nodeNum = UInt32(connectedNode?.num ?? 0)
+		contact.user = connectedNode?.toProto().user ?? User()
+		contact.manuallyVerified = true
+
+		do {
+			let contactString = try contact.serializedData().base64EncodedString()
+			return "https://meshtastic.org/v/#" + contactString.base64ToBase64url()
+		} catch {
+			Logger.services.error("Error serializing contact: \(error)")
+			return ""
+		}
+	}
+
+	var body: some View {
+		VStack{
+			List {
+				Section(header: Text("Create Node Contact NFC Tag")) {
+					if let node = connectedNode {
+						Text("Node Name: \(node.user?.longName ?? "Unknown")")
+						
+						Button {
+							nfcReader.scan(theActualData: qrString)
+						} label: {
+							Label("Write Contact to NFC Tag", systemImage: "tag")
+						}
+						.disabled(qrString.isEmpty)
+					}
+				}
+			}
+		}
+		.navigationTitle("Tools")
+		.navigationBarTitleDisplayMode(.inline)
+	}
+}
+
+#Preview {
+	Tools()
+}
+
+final class NFCReader: NSObject, ObservableObject, NFCNDEFReaderSessionDelegate {
+
+	private let logger = Logger(subsystem: "org.meshtastic.app", category: "NFC")
+	private var payloadString = ""
+	private var session: NFCNDEFReaderSession?
+
+	func scan(theActualData: String) {
+		payloadString = theActualData
+
+		session = NFCNDEFReaderSession(
+			delegate: self,
+			queue: nil,
+			invalidateAfterFirstRead: false
+		)
+
+		session?.alertMessage = "Hold your iPhone near the NFC tag."
+		session?.begin()
+	}
+
+	func readerSessionDidBecomeActive(_ session: NFCNDEFReaderSession) {
+		logger.debug("NFC session became active")
+	}
+
+	func readerSession(_ session: NFCNDEFReaderSession,
+					   didInvalidateWithError error: Error) {
+		logger.error("NFC session invalidated: \(error.localizedDescription)")
+	}
+
+	func readerSession(_ session: NFCNDEFReaderSession,
+					   didDetectNDEFs messages: [NFCNDEFMessage]) {
+	}
+
+	func readerSession(_ session: NFCNDEFReaderSession,
+					   didDetect tags: [NFCNDEFTag]) {
+
+		guard tags.count == 1, let tag = tags.first else {
+			session.alertMessage = "More than one tag detected. Please present only one."
+			DispatchQueue.global().asyncAfter(deadline: .now() + .milliseconds(500)) {
+				session.restartPolling()
+			}
+			return
+		}
+
+		session.connect(to: tag) { error in
+			if let error {
+				self.logger.error("Failed to connect to tag: \(error.localizedDescription)")
+				session.alertMessage = "Failed to connect to tag."
+				session.invalidate()
+				return
+			}
+
+			tag.queryNDEFStatus { status, _, error in
+				if let error {
+					self.logger.error("Failed to query NDEF status: \(error.localizedDescription)")
+					session.alertMessage = "Failed to read tag."
+					session.invalidate()
+					return
+				}
+
+				switch status {
+				case .notSupported:
+					self.logger.error("Tag does not support NDEF")
+					session.alertMessage = "Tag does not support NDEF."
+					session.invalidate()
+
+				case .readOnly:
+					self.logger.error("Tag is read-only")
+					session.alertMessage = "Tag is read-only."
+					session.invalidate()
+
+				case .readWrite:
+					guard let payload =
+						NFCNDEFPayload.wellKnownTypeURIPayload(
+							string: self.payloadString
+						) else {
+						self.logger.error("Invalid NDEF payload")
+						session.alertMessage = "Invalid payload."
+						session.invalidate()
+						return
+					}
+
+					let message = NFCNDEFMessage(records: [payload])
+
+					tag.writeNDEF(message) { error in
+						if let error {
+							self.logger.error("Failed to write NDEF: \(error.localizedDescription)")
+							session.alertMessage = "Failed to write tag."
+						} else {
+							self.logger.info("Successfully wrote NFC tag")
+							session.alertMessage = "NFC tag written successfully."
+						}
+						session.invalidate()
+					}
+				}
+			}
+		}
+	}
+}