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Upload three new samples - Biometric Authentication, Secure Storage,
Inter-App Communication

Biometric Authentication/MyApp.qml

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+/* Copyright 2017 Esri
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+import QtQuick 2.7
+import QtQuick.Layouts 1.1
+import QtQuick.Controls 2.1
+import QtQuick.Controls.Material 2.1
+import QtGraphicalEffects 1.0
+
+import ArcGIS.AppFramework 1.0
+import ArcGIS.AppFramework.Controls 1.0
+import ArcGIS.AppFramework.Authentication 1.0
+
+
+App {
+    id: app
+    width: 400
+    height: 750
+    function units(value) {
+        return AppFramework.displayScaleFactor * value
+    }
+    property bool isSmallScreen: (width || height) < units(400)
+    property real scaleFactor: AppFramework.displayScaleFactor
+    property bool isBiometricActivited: BiometricAuthenticator.activated
+    property bool isBiometricSupported: BiometricAuthenticator.supported
+    property string successMessage: qsTr ("Success!")
+    property string errorMessageText: BiometricAuthenticator.errorMessage
+    property string errorMessageDialogText
+    property color successColor: Material.color(Material.Teal)
+    property color errorColor: Material.color(Material.DeepOrange)
+
+    property string turnPasscodeonMessage: qsTr("To continue, go to <b>Settings > Touch ID & Passcode</b> and <b>Turn Passcode on</b>")
+    property string addFingerprintMessage: Qt.platform.os === "ios" ? qsTr("To continue, go to <b>Settings > Touch ID & Passcode</b> and <b>Add a Fingerprint</b>") : qsTr("To continue, go to <b>System Preferences > Touch ID </b> and <b>Add a Fingerprint</b>")
+
+    Rectangle {
+
+        // If biometric authentication is activated, show successColor (teal), otherwise, show errorColor (DeepOrange)
+
+        color: isBiometricActivited ? successColor : errorColor
+        anchors.fill: parent
+
+        ColumnLayout {
+            anchors.centerIn: parent
+            spacing: 10 * scaleFactor
+
+            Item {
+                Layout.fillWidth: true
+                height: 80 * scaleFactor
+            }
+
+            Label {
+                Layout.fillWidth: true
+                text: qsTr("Fingerprint Authentication")
+                font.pixelSize: 20 * scaleFactor
+                font.bold: true
+                color: "white"
+                horizontalAlignment: Text.AlignHCenter
+            }
+
+            //Show error message
+
+            Label {
+                id: supportedmessage
+                Layout.fillWidth: true
+                text: errorMessageText
+                font.pixelSize: 16 * scaleFactor
+                color: "white"
+                horizontalAlignment: Text.AlignHCenter
+                visible: errorMessageText !== "No Error"
+            }
+
+            Item {
+                Layout.fillWidth: true
+                height: 100 * scaleFactor
+            }
+
+            ColumnLayout {
+                anchors.centerIn: parent
+
+                Image {
+                    id: image
+                    horizontalAlignment: Image.AlignHCenter
+                    source: "ic_fingerprint.png"
+                    anchors.horizontalCenter: parent.horizontalCenter
+                    smooth: true
+                }
+
+                Label {
+                    id: touchID
+                    text: isBiometricSupported ? qsTr("Touch ID Login") : ""
+                    anchors.horizontalCenter: parent.horizontalCenter
+                    color: "white"
+                    font.bold: true
+                }
+
+                // Tab on fingerprint image to displays a native fingerprint authentication dialog box
+
+                MouseArea {
+                    anchors.fill: parent
+                    onClicked: {
+
+                        // Specify authentication dialog message
+
+                        BiometricAuthenticator.message = "Authenticate to log into your account"
+                        BiometricAuthenticator.authenticate()
+                    }
+                }
+
+
+                Component.onCompleted:  {
+
+                    if (errorMessageText !== "No Error") {
+
+                        if (errorMessageText === "Passcode not activated") {
+                            errorMessageDialogText = turnPasscodeonMessage;
+                        }
+
+                        if (errorMessageText === "Biometric not activated") {
+                            errorMessageDialogText = addFingerprintMessage;
+                        }
+
+                        else {
+                            messageDialog.visible = false
+                        }
+                    }
+                    else {
+                        messageDialog.visible = false
+                    }
+                }
+            }
+
+            Item {
+                Layout.fillWidth: true
+                height: 30 * scaleFactor
+            }
+
+            Row {
+                anchors.horizontalCenter: parent.horizontalCenter
+                spacing: 10 * scaleFactor
+
+                Image {
+                    id: icon
+                    width: 30 * scaleFactor
+                    height: 30 * scaleFactor
+                }
+
+                Label {
+                    id: statusMessage
+                    color: "white"
+                    font.bold: true
+                    font.pointSize: 20 * scaleFactor
+                    anchors.verticalCenter: icon.verticalCenter
+                }
+            }
+
+            Item {
+                Layout.fillWidth: true
+                height: 40 * scaleFactor
+            }
+        }
+    }
+
+    // When the authentication is successful, show successMessage ("Success!"). when the authentication has failed, show reason
+    Connections {
+        target: BiometricAuthenticator
+
+        onAccepted : {
+            icon.source = "ic_action_check_circle.png"
+            statusMessage.text = successMessage
+        }
+
+        onRejected : {
+            icon.source = "ic_action_error.png"
+            statusMessage.text = constructMessage(reason)
+        }
+    }
+
+    function constructMessage(reason) {
+        var result = "";
+        switch (reason)
+        {
+        case BiometricAuthenticator.CancelledByUser:
+            result = qsTr("Cancelled By User");
+            break;
+        case BiometricAuthenticator.InValidCredentials:
+            result = qsTr("Invalid Credentials");
+            break;
+        case BiometricAuthenticator.BiometricNotConfigured:
+            result = qsTr("Not Configured");
+            break;
+        case BiometricAuthenticator.UserFallback:
+            result = qsTr("User Fallback");
+            break;
+        case BiometricAuthenticator.PermissionDenied:
+            result = qsTr("Permission Denied");
+            break;
+        case BiometricAuthenticator.BiometricNotSupported:
+            result = qsTr("Biometric Not Supported");
+            break;
+        case BiometricAuthenticator.BadCapture:
+            result = qsTr("Bad Capture");
+            break;
+        case BiometricAuthenticator.PlatformNotSupported:
+            result = qsTr("Platform Not Supported");
+            break;
+        default:
+            result = qsTr("Unknown");
+        }
+        return result;
+    }
+
+    Dialog {
+        id: messageDialog
+        Material.accent: errorColor
+        title: errorMessageText
+        width: !isSmallScreen ? 300 * scaleFactor : parent.width * 0.8
+        height: !isSmallScreen ? 200 * scaleFactor : parent.height * 0.35
+        x: (parent.width - width)/2
+        y: (parent.height - height)/2
+        Material.theme: Material.Light
+        closePolicy: Popup.NoAutoClose
+        modal: true
+        font.pointSize: 14 * scaleFactor
+        standardButtons: Dialog.Ok
+        visible: true
+        // visible: errorMessageText === "Passcode not activated" && "Biometric not activated" ? true : false
+
+        Label {
+            id: message
+            text: errorMessageDialogText
+            opacity: 0.9
+            wrapMode: Label.Wrap
+            width: parent.width
+            height: implicitHeight
+            font.pointSize: 12 * scaleFactor
+        }
+    }
+}

Biometric Authentication/MyApp.qmlproject

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+//------------------------------------------------------------------------------
+
+import QmlProject 1.1
+
+Project {
+    mainFile: "MyApp.qml"
+
+    QmlFiles {
+        directory: "."
+        recursive: true
+    }
+
+    JavaScriptFiles {
+        directory: "."
+        recursive: true
+    }
+
+    ImageFiles {
+        directory: "."
+        recursive: true
+    }
+
+    Files {
+        directory: "."
+        recursive: true
+        filter: "*.json;*.html;*.txt"
+    }
+
+    importPaths: [
+    ]
+}
+

Biometric Authentication/README.md

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+
+## Biometric Authentication
+
+If you have enrolled and activated fingerprint in your device, you will see a teal background. Tab on the fingnerprint image to display an authentication dialog. If the fingerprint is not activated in your device, you will see an orange background.
+
+Note: Biometric Authentication is currecntly supported on iOS, macOS, and Windows platform
+
+[ Biometric Authentication API Guide](http://doc.arcgis.com/en/appstudio/api-guide/apiauthentication.htm)
+
+
+[Resource Level](https://geonet.esri.com/groups/appstudio/blog/2016/12/06/how-to-describe-our-resources-in-terms-of-difficulty-complexity-and-time-to-digest): 🍌
+
+
+## Instructions to run this sample in AppStudio Desktop
+
+1. Download the `.zip` file
+2. Unzip and copy this folder into AppStudio Apps folder (Windows: `C:\Users\<username>\ArcGIS\AppStudio\Apps` Mac or linux: `Home\ArcGIS\AppStudio\Apps`)
+3. The new app will now appear in the AppStudio Desktop. Run the application or open it in the bundled Qt-Creator IDE to look at the code and modify.
+
+## Issues
+
+Find a bug or want to request a new feature?  Please let us know by submitting an issue.
+
+## Contributing
+
+Esri welcomes contributions from anyone and everyone. Please see our [guidelines for contributing](https://github.com/esri/contributing).
+
+## Licensing
+Copyright 2017 Esri
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+A copy of the license is available in the repository's [license.txt](license.txt) file.
+
+
+[](Esri Tags: ArcGIS Runtime SDK Qt QML JavaScript iOS Android Xamarin Ionic PhoneGap Mac linux Windows Apps samples templates appstudio)
+[](Esri Language: Qt QML JavaScript)