diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28b11fb..499d793 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,11 +17,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Script tag integrations can still access `window.IProov.IProovSupport` for the time being.
 - `version` property on the `iProovMe` component.
   - This is also accessible on `window.IProov.version`.
+- Multiple camera device support on desktop, including ability to customise.
+- Added the `csp_nonce` option. See [Content Security Policy](https://github.com/iProov/web/wiki/Content-Security-Policy).
 - External dependencies are now loaded with `<link rel=preload>` for non-blocking parallel loading.
-- Our feature detector now runs the latest Tensorflow release which supports WebAssembly threads and SIMD.
+- Our feature detector now runs the latest Tensorflow release which includes support for WebAssembly threads and SIMD.
 
 ## Fixed
 
+- Various CSP warnings have been resolved. See [Content Security Policy](https://github.com/iProov/web/wiki/Content-Security-Policy).
+- Firefox and Safari no longer display the grant button unless required.
 - Further performance improvements targeted at lower end machines which have a net-positive effect across the board.
 
 ## Changed
@@ -35,6 +39,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - This affects CDN and reverse proxy configurations; we do hope this is the last change to asset loading for a long time.
   - Please see the upgrade guide for steps needed.
 - The main entry file for the npm package is now `iProovMe.js`.
+- Language files have been updated to be brought into line with native SDKs.
+- Tweaks to UI to bring the UI experience inline with native SDKs.
 - Improved our encoder for better speed and the latest bugfixes.
 
 ## Removed
@@ -51,6 +57,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Please see `.browserslistrc` for the current targeted browsers.
   - If your app must support older browsers, simply transpile the standalone `iProovSupport.js` checker as needed.
 
+## 19.11.2020 3.0.4
+
+## Fixed
+
+- Kiosk mode feature detection and alignment is now even smoother
+
 ## 23.10.2020 3.0.3
 
 ## Fixed
diff --git a/README.md b/README.md
index 6a4db1e..173e425 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# iProov Biometrics Web SDK v3.1.0-beta.2
+# iProov Biometrics Web SDK v3.1.0-beta.3
 
 ## 📖 Table of contents
 
@@ -211,9 +211,19 @@ The example below changes the default grey no face to `#4293f5` (blue), giving f
 ></iproov-me>
 ```
 
+#### CSP Nonce
+
+Set the `csp_nonce` option to a random string to avoid requiring `unsafe-inline` in your style-src CSP.
+
+Note that inline CSS _is_ needed to provide critical styles for `<iproov-me>` for immediate user interaction.
+
+```html
+<iproov-me token="***YOUR_TOKEN_HERE***" csp_nonce="P5wB82PFZt"></iproov-me>
+```
+
 #### Allow Landscape
 
-Handheld devices except Android Tablets are prevented from iProoving while in landscape orientation by displaying the `rotate_portrait` slot. All other devices by default are allowed in landscape orientation. This logic can be altered by passing `allow_landscape` as `false` with your component. See [slots](#-slots) for details on how to override the `rotate_portrait` slot. The example below would prevent all devices from being able to iProov while in landscape orientation.
+Handheld devices except Android Tablets will be prevented from starting in landscape orientation by displaying the `rotate_portrait` slot. All other devices by default are allowed in landscape orientation. This logic can be altered by passing `allow_landscape` as `false` with your component. See [slots](#-slots) for details on how to override the `rotate_portrait` slot. The example below would prevent all devices from being able to iProov while in landscape orientation.
 
 ```html
 <iproov-me token="***YOUR_TOKEN_HERE***" allow_landscape="false"></iproov-me>
@@ -227,6 +237,10 @@ By setting `show_countdown` to `true`, a countdown will be shown to the user bef
 <iproov-me token="***YOUR_TOKEN_HERE***" show_countdown="true"></iproov-me>
 ```
 
+#### Enable camera selector
+
+By setting `enable_camera_selector` to `true`, the `camera_selector` slot and `multiple_cameras` event will be exposed. See [Camera Selector](#-slots) slot for customisation options. This feature is only available on desktop devices (laptops, PCs etc).
+
 #### Kiosk Mode
 
 Note this setting enables a feature which is in alpha and still under active development.
@@ -312,24 +326,27 @@ To allow language keys to be dynamically applied to slots, special class names m
 
 The following is the complete list of slots can be used with the `<iproov-me>` web component and have associated [events](#-events):
 
-| Slot                  | Description                                                                                                                 |
-| --------------------- | --------------------------------------------------------------------------------------------------------------------------- |
-| **button**            | Element that a user taps or clicks on to launch into fullscreen and start iProov                                            |
-| **cancelled**         | State displayed to the user when they exit fullscreen before iProoving                                                      |
-| **error**             | State displayed to the user in the event of an error                                                                        |
-| **failed**            | State displayed to the user when the user failed iProov                                                                     |
-| **grant_button**      | Element that user taps or clicks to grant camera permission                                                                 |
-| **grant_permission**  | State displayed to the user when camera permission is unknown and not blocked                                               |
-| **interrupted**       | State displayed to the user when fullscreen quickly exits after launch, maybe due to software                               |
-| **no_camera**         | State displayed to the user when there is no camera                                                                         |
-| **passed**            | State displayed to the user when the user passed iProov                                                                     |
-| **permission_denied** | State displayed to the user when camera permission has been blocked                                                         |
-| **progress**          | State displayed to the user when streaming has completed and iProov is processing the result                                |
-| **ready**             | State displayed to the user when the component is ready to start the main iProov user journey                               |
-| **rotate_portrait** *  | State displayed to the user when a handheld device is not in portrait orientation |
-| **unsupported**       | State displayed to the user when their browser is not supported                                                             |
-
-> \* See [allow landscape](#-allow-landscape) option which controls the behaviour of the `rotate_portrait` slot and details on how to override.
+| Slot                     | Description                                                                                   |
+| ------------------------ | --------------------------------------------------------------------------------------------- |
+| **button**               | Element that a user taps or clicks on to launch into fullscreen and start iProov              |
+| **camera_selector** \*   | Label and dropdown populated with available cameras, if multiple cameras are detected.        |
+| **cancelled**            | State displayed to the user when they exit fullscreen before iProoving                        |
+| **error**                | State displayed to the user in the event of an error                                          |
+| **failed**               | State displayed to the user when the user failed iProov                                       |
+| **grant_button**         | Element that user taps or clicks to grant camera permission                                   |
+| **grant_permission**     | State displayed to the user when camera permission is unknown and not blocked                 |
+| **interrupted**          | State displayed to the user when fullscreen quickly exits after launch, maybe due to software |
+| **no_camera**            | State displayed to the user when there is no camera                                           |
+| **passed**               | State displayed to the user when the user passed iProov                                       |
+| **permission_denied**    | State displayed to the user when camera permission has been blocked                           |
+| **progress**             | State displayed to the user when streaming has completed and iProov is processing the result  |
+| **ready**                | State displayed to the user when the component is ready to start the main iProov user journey |
+| **rotate_portrait** \*\* | State displayed to the user when a handheld device is not in portrait orientation             |
+| **unsupported**          | State displayed to the user when their browser is not supported                               |
+
+> \* Visible and managed when [camera selection](#enable-camera-selector) is enabled. A select menu with the class `iproov-camera-selector` must be present within your slots markup. An error will be thrown if this cannot be found.
+
+> \*\* See [allow landscape](#-allow-landscape) option which controls the behaviour of the `rotate_portrait` slot and details on how to override.
 
 Slots can be embedded as HTML or injected with JavaScript.
 
@@ -349,37 +366,43 @@ Every event has a [detail](https://developer.mozilla.org/en-US/docs/Web/API/Cust
 
 The available events are detailed below with any extra properties that are supplied:
 
-| Event                 | Extra Properties                          | Description                                                       |
-| --------------------- | ----------------------------------------- | ----------------------------------------------------------------- |
-| **ready**             | None                                      | iProov has initialised successfully and has camera permission     |
-| **started**           | None                                      | User has started iProov by launching into fullscreen              |
-| **cancelled**         | _feedback, reason_                        | User has cancelled iProov by exiting fullscreen                   |
-| **interrupted**       | _feedback, reason_                        | Fast fullscreen exit possible due to software. Retry is possible. |
-| **streamed**          | None                                      | User has finished streaming and the client has exited fullscreen  |
-| **progress**          | _percentage, message_                     | iProov has published a progress update for the authentication     |
-| **passed**            | _type, passed, frame_                     | Authentication was successful, the result can now be validated    |
-| **failed**            | _type, passed, feedback, reason, frame_   | Authentication was unsuccessful, the user needs to try again      |
-| **error**             | _feedback, reason_                        | iProov encountered an error while processing the authentication   |
-| **unsupported**       | _feedback, reason_                        | Browser does not support using iProov                             |
-| **permission**        | None                                      | Camera permission is unknown & not blocked, show permission       |
-| **permission_denied** | None                                      | User has blocked access to the camera                             |
-
-All possible properties of the event's **detail** property are described below:
+| Event                   | Extra Properties                 | Description                                                                                               |
+| ----------------------- | -------------------------------- | --------------------------------------------------------------------------------------------------------- |
+| **cancelled**           | _feedback, reason_               | User has cancelled iProov by exiting fullscreen                                                           |
+| **error**               | _feedback, reason_               | iProov encountered an error while processing the authentication                                           |
+| **failed**              | _type, passed, feedback, reason_ | Authentication was unsuccessful, the user needs to try again                                              |
+| **interrupted**         | _feedback, reason_               | Fast fullscreen exit possible due to software. Retry is possible.                                         |
+| **multiple_cameras** \* | _devices, device_selector, slot_ | If `enable_camera_selector` is `true` returns an array of devices if more than 1 video device is detected |
+| **passed**              | _type, passed_                   | Authentication was successful, the result can now be validated                                            |
+| **permission**          | None                             | Camera permission is unknown & not blocked, show permission                                               |
+| **permission_denied**   | None                             | User has blocked access to the camera                                                                     |
+| **progress**            | _percentage, message_            | iProov has published a progress update for the authentication                                             |
+| **ready**               | None                             | iProov has initialised successfully and has camera permission                                             |
+| **started**             | None                             | User has started iProov by launching into fullscreen                                                      |
+| **streamed**            | None                             | User has finished streaming and the client has exited fullscreen                                          |
+| **unsupported**         | _feedback, reason_               | Browser does not support using iProov                                                                     |
+
+> \* See [Multiple Camera Example](https://github.com/iProov/web/wiki/Camera-Selection-Example) for an example demonstrating how a camera selection feature could be implemented.
+
+Properties of the event's **detail** payload:
 
 | Property             | Events                                               | Description                                                |
 | -------------------- | ---------------------------------------------------- | ---------------------------------------------------------- |
 | **token**            | All                                                  | The token associated with the authentication attempt       |
 | **type** (†)         | _passed, failed_                                     | The type of authentication (enrol, verify or id_match)     |
 | **passed**           | _passed, failed_                                     | Boolean value whether the result passed or failed          |
-| **frame** (†) (*)    | _passed, failed_                                     | An `ImageData` from the scanning process                   |
+| **frame** (†) (\*)   | _passed, failed_                                     | An `ImageData` from the scanning process                   |
 | **percentage**       | _progress_                                           | A percentage (between 0 and 100) representing the progress |
 | **message**          | _progress_                                           | A user-friendly description of the current progress stage  |
 | **feedback**         | _cancelled, interrupted, failed, error, unsupported_ | A fixed feedback code for making logical decisions         |
 | **reason**           | _cancelled, interrupted, failed, error, unsupported_ | An English description of the reason for the event         |
+| **slot**             | _multiple_cameras_                                   | The relevant slot for the event, for ease of use           |
+| **devices**          | _multiple_cameras_                                   | Array of suitable `InputDevice`s for imagery capture       |
+| **device_selector**  | _multiple_cameras_                                   | The multiple camera selection `<select>` element           |
 | **is_native_bridge** | All                                                  | Boolean value if event originates from the native bridge   |
 
-> * - The `frame` property is for UI/UX purposes only and is only available if enabled on your service provider and token configuration. Imagery upon which authentication may later rely must be obtained from the token validate endpoint by a secure server-to-server call.
-> † - The **type** and **frame** properties are not available when running in Native Bridge mode.
+> - - The `frame` property is for UI/UX purposes only and is only available if enabled on your service provider and token configuration. Imagery upon which authentication may later rely must be obtained from the token validate endpoint by a secure server-to-server call.
+>     † - The **type** and **frame** properties are not available when running in Native Bridge mode.
 
 In the case of the **cancelled**, **interrupted**, **failed**, **error** and **unsupported** events, the _feedback_ code can be used for dealing with special cases, and the _reason_ can be displayed to the user. The following are possible responses:
 
diff --git a/iproov-en.json b/iproov-en.json
index d925743..22a5223 100644
--- a/iproov-en.json
+++ b/iproov-en.json
@@ -1,6 +1,5 @@
 {
   "language_file": "en-GB",
-  "app_name": "iProov",
   "authenticate": "Authenticate",
   "client_error": "An unknown error occurred",
   "enrol": "Enrol",
@@ -10,36 +9,18 @@
   "error_camera_in_use": "The camera is already in use and cannot be accessed",
   "error_camera_permission_denied": "Camera permission denied",
   "error_camera_permission_denied_message": "Permission to access the camera has been denied. Please allow camera access to use iProov. If you have already allowed access, please reload the page.",
-  "error_camera_permission_denied_message_android": "You must allow access to your camera in order to iProov yourself",
-  "error_camera_permission_denied_message_ios": "Please allow camera access for this app in iOS Settings",
-  "error_camera_unavailable": "Unable to access the camera: access is only available through https or localhost",
-  "error_capture_already_active": "An existing capture is already in progress",
   "error_device_motion_unsupported": "Your device does not seem to fully report device motion",
-  "error_device_not_supported": "Your device is currently not supported",
-  "error_encoder": "Encoder error",
-  "error_encoder_code_message": "Error code %@",
-  "error_encoder_unknown_message": "Unknown encoder error",
-  "error_flashmark": "Malformed flashmark",
   "error_fullscreen_change": "Exited full-screen without completing iProov",
   "error_expired_token": "The token has already been used or has expired",
   "error_invalid_token": "The token is invalid",
-  "error_lighting_model": "Lighting model error",
-  "error_multi_screen_message": "Application is in multi-window mode.\\nPlease make it full-screen and try again",
-  "error_multi_screen_title": "Application is in multi-window mode",
   "error_no_camera": "No Camera Detected",
   "error_no_camera_message": "A camera must be available to use iProov",
   "error_no_face_found": "No face could be found",
   "error_not_supported": "Unsupported",
   "error_not_supported_message": "Your device is not supported",
-  "error_sdk_internal": "An error has occurred",
   "error_server": "Server error",
-  "error_server_abort": "Server abort",
-  "error_service_connection_lost": "Connection to the Service has been lost",
-  "error_ssl_exception": "SSL Exception",
-  "error_streaming": "Streaming error",
-  "error_user_timeout": "Your session has expired",
   "failed": "Failed",
-  "failure_ambiguous_outcome": "Sorry, ambiguous outcome",
+  "failure_ambiguous_outcome": "Ambiguous outcome",
   "failure_lighting_backlit": "Strong light source detected behind you",
   "failure_lighting_face_too_bright": "Too much light detected on your face",
   "failure_lighting_flash_reflection_too_low": "Ambient light too strong or screen brightness too low",
@@ -47,51 +28,37 @@
   "failure_motion_too_much_mouth_movement": "Please do not talk while iProoving",
   "failure_motion_too_much_movement": "Please do not move while iProoving",
   "failure_network_problem": "Sorry, network problem",
-  "failure_user_timeout": "Sorry, your session has timed out",
+  "failure_user_timeout": "Your session has expired",
   "iproov_success": "You have iProoved successfully",
+  "label_camera_selector": "Choose camera:",
   "message_format": "%@ to %@",
   "message_format_with_username": "%@ as %@ to %@",
   "passed": "Passed",
   "progress_assessing_genuine_presence": "Assessing genuine presence…",
-  "progress_assessing_liveness": "Assessing Liveness",
+  "progress_assessing_liveness": "Assessing liveness...",
   "progress_confirming_identity": "Confirming identity…",
   "progress_creating_identity": "Creating identity…",
   "progress_finding_face": "Finding face…",
   "progress_identifying_face": "Identifying face…",
   "progress_loading": "Loading…",
-  "progress_processing": "Processing…",
   "progress_streaming": "Streaming…",
-  "progress_streaming_slow": "Streaming, network is slow…",
-  "prompt_beginning_in": "Starting in…",
   "prompt_connecting": "Connecting…",
-  "prompt_connecting_slow": "Connecting, network is slow…",
   "prompt_get_ready": "Get ready…",
   "prompt_grant_permission": "Grant Camera Access",
   "prompt_grant_permission_message": "Camera access must be granted to use iProov",
-  "prompt_hold_still": "Put your face in the oval",
+  "prompt_genuine_presence_align_face": "Put your face in the oval",
   "prompt_kiosk_align_face": "Put your face in the oval",
   "prompt_kiosk_keep_still": "Keep still",
   "prompt_liveness_align_face": "Fill the oval with your face",
-  "prompt_liveness_no_face": "Put your face in the frame",
+  "prompt_liveness_no_target": "Put your face in the frame",
   "prompt_liveness_scan_completed": "Scan completed",
   "prompt_loading": "Please wait…",
-  "prompt_loading_slow": "Connecting, network is slow…",
-  "prompt_pitch_too_high": "Hold the device at eye level",
-  "prompt_pitch_too_low": "Hold the device at eye level",
-  "prompt_roll_too_high": "Avoid tilting your head",
-  "prompt_roll_too_low": "Avoid tilting your head",
   "prompt_rotate_portrait": "Please rotate your device to portrait",
   "prompt_scanning": "Scanning…",
-  "prompt_tap_to_begin": "Tap the screen to begin",
-  "prompt_too_bright": "Go somewhere shadier",
   "prompt_too_close": "Too close",
   "prompt_too_far": "Move closer",
   "prompt_too_high": "Move down",
   "prompt_too_left": "Move right",
   "prompt_too_low": "Move up",
-  "prompt_too_right": "Move left",
-  "prompt_yaw_too_high": "Turn slightly to your left",
-  "prompt_yaw_too_low": "Turn slightly to your right",
-  "starting_detector": "Starting detector…",
-  "unknown_error": "Unknown Error"
+  "prompt_too_right": "Move left"
 }