diff --git a/db/migrate/20190729134954_add_user_interface_read_only_mode_to_web_app_config.rb b/db/migrate/20190729134954_add_user_interface_read_only_mode_to_web_app_config.rb
new file mode 100644
index 000000000..8ccfb7167
--- /dev/null
+++ b/db/migrate/20190729134954_add_user_interface_read_only_mode_to_web_app_config.rb
@@ -0,0 +1,10 @@
+class AddUserInterfaceReadOnlyModeToWebAppConfig < ActiveRecord::Migration[5.2]
+  def change
+    safety_assured do
+      add_column :web_app_configs,
+                 :user_interface_read_only_mode,
+                 :boolean,
+                 default: false
+    end
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index ce6ec755d..7882b116f 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -1663,7 +1663,8 @@ CREATE TABLE public.web_app_configs (
     hide_sensors boolean DEFAULT false,
     confirm_plant_deletion boolean DEFAULT true,
     discard_unsaved_sequences boolean DEFAULT false,
-    confirm_sequence_deletion boolean DEFAULT true
+    confirm_sequence_deletion boolean DEFAULT true,
+    user_interface_read_only_mode boolean DEFAULT false
 );
 
 
@@ -3149,6 +3150,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20190701155706'),
 ('20190709194037'),
 ('20190715214412'),
-('20190722160305');
+('20190722160305'),
+('20190729134954');
 
 
diff --git a/frontend/__test_support__/fake_state/resources.ts b/frontend/__test_support__/fake_state/resources.ts
index 0c67da0b7..90948d740 100644
--- a/frontend/__test_support__/fake_state/resources.ts
+++ b/frontend/__test_support__/fake_state/resources.ts
@@ -318,6 +318,7 @@ export function fakeWebAppConfig(): TaggedWebAppConfig {
     disable_emergency_unlock_confirmation: false,
     map_size_x: 2900,
     map_size_y: 1400,
+    user_interface_read_only_mode: false
   });
 }
 
diff --git a/frontend/account/labs/labs_features_list_data.ts b/frontend/account/labs/labs_features_list_data.ts
index 596f6935c..2e1b58207 100644
--- a/frontend/account/labs/labs_features_list_data.ts
+++ b/frontend/account/labs/labs_features_list_data.ts
@@ -72,6 +72,13 @@ export const fetchLabFeatures =
       value: false,
       displayInvert: true,
     },
+    {
+      name: t("User Interface Read Only Mode"),
+      description: t(Content.USER_INTERFACE_READ_ONLY_MODE),
+      storageKey: BooleanSetting.user_interface_read_only_mode,
+      value: false,
+      displayInvert: false,
+    }
   ].map(fetchSettingValue(getConfigValue)));
 
 /** Always allow toggling from true => false (deactivate).
diff --git a/frontend/constants.ts b/frontend/constants.ts
index c35bd7e15..ff6496083 100644
--- a/frontend/constants.ts
+++ b/frontend/constants.ts
@@ -538,6 +538,10 @@ export namespace Content {
   export const EMERGENCY_UNLOCK_CONFIRM_CONFIG =
     trim(`Confirm when unlocking FarmBot after an emergency stop.`);
 
+  export const USER_INTERFACE_READ_ONLY_MODE =
+    trim(`Disallow account data changes. This does
+    not prevent Farmwares or FarmBot OS from changing settings.`);
+
   export const CONFIRM_EMERGENCY_UNLOCK_CONFIRM_DISABLE =
     trim(`Warning! When disabled, clicking the UNLOCK button will immediately
     unlock FarmBot instead of confirming that it is safe to do so.
diff --git a/frontend/resources/getters.ts b/frontend/resources/getters.ts
index 01616b3f0..f5a7ad2d0 100644
--- a/frontend/resources/getters.ts
+++ b/frontend/resources/getters.ts
@@ -8,7 +8,6 @@ import {
 
 /** @fileoverview Resource selectors for SINGULAR resources. */
 
-/** Wow! */
 export const getFbosConfig =
   (i: ResourceIndex): TaggedFbosConfig | undefined =>
     findAll<TaggedFbosConfig>(i, "FbosConfig")[0];
diff --git a/frontend/resources/selectors.ts b/frontend/resources/selectors.ts
index e6bc8e688..298fee47e 100644
--- a/frontend/resources/selectors.ts
+++ b/frontend/resources/selectors.ts
@@ -249,3 +249,14 @@ export function getUserAccountSettings(index: ResourceIndex): TaggedUser {
 export function all(index: ResourceIndex) {
   return betterCompact(Object.keys(index.all).map(uuid => index.references[uuid]));
 }
+
+/** Returns `true` if the user is allowed to modify account data.
+ * This is a helper function of the "readonly" account lock. */
+export function appIsReadonly(index: ResourceIndex) {
+  const conf = getWebAppConfig(index);
+  if (conf) {
+    return conf.body.user_interface_read_only_mode;
+  } else {
+    return true; // Don't allow data updates until config is found
+  }
+}
diff --git a/frontend/session_keys.ts b/frontend/session_keys.ts
index 4403b2c6d..ac73dcf5b 100644
--- a/frontend/session_keys.ts
+++ b/frontend/session_keys.ts
@@ -44,6 +44,7 @@ export const BooleanSetting: Record<BooleanConfigKey, BooleanConfigKey> = {
   discard_unsaved: "discard_unsaved",
   time_format_24_hour: "time_format_24_hour",
   disable_emergency_unlock_confirmation: "disable_emergency_unlock_confirmation",
+  user_interface_read_only_mode: "user_interface_read_only_mode",
 
   /** Farmware settings */
   show_first_party_farmware: "show_first_party_farmware",
diff --git a/package.json b/package.json
index 8306c2621..485f79fdd 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "coveralls": "3.0.5",
     "enzyme": "3.10.0",
     "enzyme-adapter-react-16": "1.14.0",
-    "farmbot": "8.0.3-rc1",
+    "farmbot": "8.0.3",
     "i18next": "17.0.6",
     "lodash": "4.17.15",
     "markdown-it": "9.0.1",