diff --git a/data/theme/gnome-shell-sass/widgets/_login-lock.scss b/data/theme/gnome-shell-sass/widgets/_login-lock.scss
index b661e93c8d2aae131eb81efbd05a9d2300772fa7..d11d7224bc4f9e98f47e4d042a829ae7824ea8b1 100644
--- a/data/theme/gnome-shell-sass/widgets/_login-lock.scss
+++ b/data/theme/gnome-shell-sass/widgets/_login-lock.scss
@@ -258,6 +258,21 @@ $_gdm_dialog_width: 25em;
   }
 }
 
+// Parental controls
+.parental-controls-shield {
+  spacing: 0.75em;
+
+  .parental-controls-shield-title {
+    margin-top: 0.6em;
+    @extend %title_4;
+    text-align: center;
+  }
+
+  .parental-controls-shield-description {
+    text-align: center;
+  }
+}
+
 // Notifications
 #unlockDialogNotifications {
   > .vhandle, > .hhandle {
diff --git a/js/gdm/authPrompt.js b/js/gdm/authPrompt.js
index 9282d236ec256f112642c58547075a979e0344f1..4a9e4f67b34e0d9f12ea5234906c931678f13b6c 100644
--- a/js/gdm/authPrompt.js
+++ b/js/gdm/authPrompt.js
@@ -17,6 +17,33 @@ import {wiggle} from '../misc/animationUtils.js';
 
 const DEFAULT_BUTTON_WELL_ICON_SIZE = 16;
 const DEFAULT_BUTTON_WELL_ANIMATION_DELAY = 1000;
+
+// A widget displayed instead of the unlock prompt
+// when parental controls session limits are reached
+const ParentalControlsShield = GObject.registerClass(
+class ParentalControlsShield extends St.BoxLayout {
+    _init() {
+        super._init({
+            style_class: 'parental-controls-shield',
+            orientation: Clutter.Orientation.VERTICAL,
+            x_align: Clutter.ActorAlign.CENTER,
+        });
+
+        this._titleLabel = new St.Label({
+            style_class: 'parental-controls-shield-title',
+            text: _('Screen Time Limit Reached'),
+        });
+        this.add_child(this._titleLabel);
+
+        this._descriptionLabel = new St.Label({
+            style_class: 'parental-controls-shield-description',
+            text: _('Daily limit for screen time on this device has been reached. Resume tomorrow.'),
+        });
+        this._descriptionLabel.clutter_text.line_wrap = true;
+        this.add_child(this._descriptionLabel);
+    }
+});
+
 export const DEFAULT_BUTTON_WELL_ANIMATION_TIME = 300;
 
 export const MESSAGE_FADE_OUT_ANIMATION_TIME = 500;
@@ -95,18 +122,27 @@ export const AuthPrompt = GObject.registerClass({
         });
         this.add_child(this._userWell);
 
+        this._inputWell = new St.BoxLayout({
+            style_class: 'login-dialog-prompt-layout',
+            orientation: Clutter.Orientation.VERTICAL,
+            x_align: Clutter.ActorAlign.CENTER,
+            x_expand: true,
+        });
+        this.add_child(this._inputWell);
+        this._mainContent = this._inputWell;
+
         this._hasCancelButton = this._mode === AuthPromptMode.UNLOCK_OR_LOG_IN;
 
         this._initInputRow();
 
         const capsLockPlaceholder = new St.Label();
-        this.add_child(capsLockPlaceholder);
+        this._inputWell.add_child(capsLockPlaceholder);
 
         this._capsLockWarningLabel = new ShellEntry.CapsLockWarning({
             x_expand: true,
             x_align: Clutter.ActorAlign.CENTER,
         });
-        this.add_child(this._capsLockWarningLabel);
+        this._inputWell.add_child(this._capsLockWarningLabel);
 
         this._capsLockWarningLabel.bind_property('visible',
             capsLockPlaceholder, 'visible',
@@ -122,7 +158,7 @@ export const AuthPrompt = GObject.registerClass({
         });
         this._message.clutter_text.line_wrap = true;
         this._message.clutter_text.ellipsize = Pango.EllipsizeMode.NONE;
-        this.add_child(this._message);
+        this._inputWell.add_child(this._message);
     }
 
     _createUserVerifier(gdmClient, params) {
@@ -150,7 +186,7 @@ export const AuthPrompt = GObject.registerClass({
             style_class: 'login-dialog-button-box',
             orientation: Clutter.Orientation.HORIZONTAL,
         });
-        this.add_child(this._mainBox);
+        this._inputWell.add_child(this._mainBox);
 
         this.cancelButton = new St.Button({
             style_class: 'login-dialog-button cancel-button',
@@ -213,7 +249,7 @@ export const AuthPrompt = GObject.registerClass({
             scale_x: 0,
         });
 
-        this.add_child(this._timedLoginIndicator);
+        this._inputWell.add_child(this._timedLoginIndicator);
 
         [this._textEntry, this._passwordEntry].forEach(entry => {
             entry.clutter_text.connect('text-changed', () => {
@@ -691,6 +727,25 @@ export const AuthPrompt = GObject.registerClass({
         this._entry.clutter_text.insert_unichar(unichar);
     }
 
+    /*
+     * Set whether to block the authentication with the parental controls shield.
+     *
+     * @param {boolean} shouldBlock Whether to block the authentication
+     */
+    setAuthBlocked(shouldBlock) {
+        if (!this._parentalControlsShield)
+            this._parentalControlsShield = new ParentalControlsShield();
+
+        const newMainContent = shouldBlock
+            ? this._parentalControlsShield
+            : this._inputWell;
+
+        if (newMainContent !== this._mainContent) {
+            this.replace_child(this._mainContent, newMainContent);
+            this._mainContent = newMainContent;
+        }
+    }
+
     begin(params) {
         params = Params.parse(params, {
             userName: null,
diff --git a/js/ui/unlockDialog.js b/js/ui/unlockDialog.js
index 676a2fe8ba103d877d6dbdbb639513379fbc139a..c151222b4675c014e5643a9cdb759f14de043e5d 100644
--- a/js/ui/unlockDialog.js
+++ b/js/ui/unlockDialog.js
@@ -15,6 +15,7 @@ import * as Main from './main.js';
 import * as MessageTray from './messageTray.js';
 import * as SwipeTracker from './swipeTracker.js';
 import {formatDateWithCFormatString} from '../misc/dateUtils.js';
+import {TimeLimitsState} from '../misc/timeLimitsManager.js';
 import * as AuthPrompt from '../gdm/authPrompt.js';
 import {AuthPromptStatus} from '../gdm/authPrompt.js';
 import {MprisSource} from './mpris.js';
@@ -642,6 +643,14 @@ export const UnlockDialog = GObject.registerClass({
 
         this._updateUserSwitchVisibility();
 
+        // When parental controls session limits are enabled, the screen will be
+        // locked upon reaching the time limit. In those cases, tweak the lock screen,
+        // so that the children cannot unlock without parental supervision.
+        Main.timeLimitsManager.connectObject(
+            'notify::state', () => this._updateAuthBlocked(),
+            this);
+        this._updateAuthBlocked();
+
         // Main Box
         const mainBox = new St.Widget();
         mainBox.add_constraint(new Layout.MonitorConstraint({primary: true}));
@@ -757,6 +766,8 @@ export const UnlockDialog = GObject.registerClass({
             this._authPrompt.updateSensitivity(
                 verificationStatus === AuthPromptStatus.NOT_VERIFYING);
         }
+
+        this._updateAuthBlocked();
     }
 
     _maybeDestroyAuthPrompt() {
@@ -914,6 +925,11 @@ export const UnlockDialog = GObject.registerClass({
             !this._lockdownSettings.get_boolean('disable-user-switching');
     }
 
+    _updateAuthBlocked() {
+        this._authPrompt?.setAuthBlocked(
+            Main.timeLimitsManager.state === TimeLimitsState.LIMIT_REACHED);
+    }
+
     cancel() {
         if (this._authPrompt)
             this._authPrompt.cancel();