diff --git a/packages/SystemUI/res/values/bools.xml b/packages/SystemUI/res/values/bools.xml
index 499e24e6ecbd2..c67ac8d34aa66 100644
--- a/packages/SystemUI/res/values/bools.xml
+++ b/packages/SystemUI/res/values/bools.xml
@@ -18,4 +18,6 @@
 <resources>
     <!-- Whether to show the user switcher in quick settings when only a single user is present. -->
     <bool name="qs_show_user_switcher_for_single_user">false</bool>
+    <!-- Whether to show a custom biometric prompt size-->
+    <bool name="use_custom_bp_size">false</bool>
 </resources>
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 4136b04f71961..4ec9780bea2f1 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -945,6 +945,8 @@
     <dimen name="biometric_dialog_medium_to_large_translation_offset">100dp</dimen>
     <!-- Y translation for credential contents when animating in -->
     <dimen name="biometric_dialog_credential_translation_offset">60dp</dimen>
+    <dimen name="biometric_dialog_width">240dp</dimen>
+    <dimen name="biometric_dialog_height">240dp</dimen>
 
     <!-- Starting text size in sp of batteryLevel for wireless charging animation -->
     <item name="wireless_charging_anim_battery_level_text_size_start" format="float" type="dimen">
diff --git a/packages/SystemUI/src/com/android/systemui/biometrics/AuthBiometricView.java b/packages/SystemUI/src/com/android/systemui/biometrics/AuthBiometricView.java
index e94b1f8122a65..0ac71c462e211 100644
--- a/packages/SystemUI/src/com/android/systemui/biometrics/AuthBiometricView.java
+++ b/packages/SystemUI/src/com/android/systemui/biometrics/AuthBiometricView.java
@@ -169,6 +169,10 @@ public abstract class AuthBiometricView extends LinearLayout {
 
     private Animator.AnimatorListener mJankListener;
 
+    private final boolean mUseCustomBpSize;
+    private final int mCustomBpWidth;
+    private final int mCustomBpHeight;
+
     private final OnClickListener mBackgroundClickListener = (view) -> {
         if (mState == STATE_AUTHENTICATED) {
             Log.w(TAG, "Ignoring background click after authenticated");
@@ -209,6 +213,10 @@ public abstract class AuthBiometricView extends LinearLayout {
             handleResetAfterHelp();
             Utils.notifyAccessibilityContentChanged(mAccessibilityManager, this);
         };
+
+        mUseCustomBpSize = getResources().getBoolean(R.bool.use_custom_bp_size);
+        mCustomBpWidth = getResources().getDimensionPixelSize(R.dimen.biometric_dialog_width);
+        mCustomBpHeight = getResources().getDimensionPixelSize(R.dimen.biometric_dialog_height);
     }
 
     /** Delay after authentication is confirmed, before the dialog should be animated away. */
@@ -834,14 +842,17 @@ public abstract class AuthBiometricView extends LinearLayout {
 
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        final int width = MeasureSpec.getSize(widthMeasureSpec);
-        final int height = MeasureSpec.getSize(heightMeasureSpec);
+        int width = MeasureSpec.getSize(widthMeasureSpec);
+        int height = MeasureSpec.getSize(heightMeasureSpec);
 
-        final int newWidth = Math.min(width, height);
+        if (mUseCustomBpSize) {
+            width = mCustomBpWidth;
+            height = mCustomBpHeight;
+        } else {
+            width = Math.min(width, height);
+        }
 
-        // Use "newWidth" instead, so the landscape dialog width is the same as the portrait
-        // width.
-        mLayoutParams = onMeasureInternal(newWidth, height);
+        mLayoutParams = onMeasureInternal(width, height);
         setMeasuredDimension(mLayoutParams.mMediumWidth, mLayoutParams.mMediumHeight);
     }