6 files changed, 39 insertions, 7 deletions

diff --git a/src/common/settings.h b/src/common/settings.h
index f4eb4e3cd..5f4caaab9 100644
--- a/src/common/settings.h
+++ b/src/common/settings.h
@@ -535,6 +535,8 @@ struct Values {
     Setting<bool> enable_ir_sensor{false, "enable_ir_sensor"};
     Setting<std::string> ir_sensor_device{"auto", "ir_sensor_device"};
 
+    Setting<bool> random_amiibo_id{false, "random_amiibo_id"};
+
     // Data Storage
     Setting<bool> use_virtual_sd{true, "use_virtual_sd"};
     Setting<bool> gamecard_inserted{false, "gamecard_inserted"};
diff --git a/src/core/hle/service/nfc/common/device.cpp b/src/core/hle/service/nfc/common/device.cpp
index e5de65ce0..9b0685bdb 100644
--- a/src/core/hle/service/nfc/common/device.cpp
+++ b/src/core/hle/service/nfc/common/device.cpp
@@ -227,11 +227,20 @@ Result NfcDevice::GetTagInfo(NFP::TagInfo& tag_info, bool is_mifare) const {
         return ResultWrongDeviceState;
     }
 
+    UniqueSerialNumber uuid = encrypted_tag_data.uuid.uid;
+
+    // Generate random UUID to bypass amiibo load limits
+    if (Settings::values.random_amiibo_id) {
+        Common::TinyMT rng{};
+        rng.GenerateRandomBytes(uuid.data(), sizeof(UniqueSerialNumber));
+        uuid[3] = 0x88 ^ uuid[0] ^ uuid[1] ^ uuid[2];
+    }
+
     if (is_mifare) {
         tag_info = {
-            .uuid = encrypted_tag_data.uuid.uid,
+            .uuid = uuid,
             .uuid_extension = {},
-            .uuid_length = static_cast<u8>(encrypted_tag_data.uuid.uid.size()),
+            .uuid_length = static_cast<u8>(uuid.size()),
             .protocol = NfcProtocol::TypeA,
             .tag_type = TagType::Type4,
         };
@@ -240,9 +249,9 @@ Result NfcDevice::GetTagInfo(NFP::TagInfo& tag_info, bool is_mifare) const {
 
     // Protocol and tag type may change here
     tag_info = {
-        .uuid = encrypted_tag_data.uuid.uid,
+        .uuid = uuid,
         .uuid_extension = {},
-        .uuid_length = static_cast<u8>(encrypted_tag_data.uuid.uid.size()),
+        .uuid_length = static_cast<u8>(uuid.size()),
         .protocol = NfcProtocol::TypeA,
         .tag_type = TagType::Type2,
     };
diff --git a/src/yuzu/configuration/config.cpp b/src/yuzu/configuration/config.cpp
index a49d12266..b94d36838 100644
--- a/src/yuzu/configuration/config.cpp
+++ b/src/yuzu/configuration/config.cpp
@@ -443,6 +443,7 @@ void Config::ReadControlValues() {
     ReadBasicSetting(Settings::values.mouse_panning_sensitivity);
     ReadBasicSetting(Settings::values.enable_joycon_driver);
     ReadBasicSetting(Settings::values.enable_procon_driver);
+    ReadBasicSetting(Settings::values.random_amiibo_id);
 
     ReadBasicSetting(Settings::values.tas_enable);
     ReadBasicSetting(Settings::values.tas_loop);
@@ -1150,6 +1151,7 @@ void Config::SaveControlValues() {
     WriteBasicSetting(Settings::values.enable_raw_input);
     WriteBasicSetting(Settings::values.enable_joycon_driver);
     WriteBasicSetting(Settings::values.enable_procon_driver);
+    WriteBasicSetting(Settings::values.random_amiibo_id);
     WriteBasicSetting(Settings::values.keyboard_enabled);
     WriteBasicSetting(Settings::values.emulate_analog_keyboard);
     WriteBasicSetting(Settings::values.mouse_panning_sensitivity);
diff --git a/src/yuzu/configuration/configure_input_advanced.cpp b/src/yuzu/configuration/configure_input_advanced.cpp
index 8d81322f3..f13156434 100644
--- a/src/yuzu/configuration/configure_input_advanced.cpp
+++ b/src/yuzu/configuration/configure_input_advanced.cpp
@@ -140,6 +140,7 @@ void ConfigureInputAdvanced::ApplyConfiguration() {
     Settings::values.enable_ir_sensor = ui->enable_ir_sensor->isChecked();
     Settings::values.enable_joycon_driver = ui->enable_joycon_driver->isChecked();
     Settings::values.enable_procon_driver = ui->enable_procon_driver->isChecked();
+    Settings::values.random_amiibo_id = ui->random_amiibo_id->isChecked();
 }
 
 void ConfigureInputAdvanced::LoadConfiguration() {
@@ -176,6 +177,7 @@ void ConfigureInputAdvanced::LoadConfiguration() {
     ui->enable_ir_sensor->setChecked(Settings::values.enable_ir_sensor.GetValue());
     ui->enable_joycon_driver->setChecked(Settings::values.enable_joycon_driver.GetValue());
     ui->enable_procon_driver->setChecked(Settings::values.enable_procon_driver.GetValue());
+    ui->random_amiibo_id->setChecked(Settings::values.random_amiibo_id.GetValue());
 
     UpdateUIEnabled();
 }
diff --git a/src/yuzu/configuration/configure_input_advanced.ui b/src/yuzu/configuration/configure_input_advanced.ui
index 0eb2b34bc..2e8b13660 100644
--- a/src/yuzu/configuration/configure_input_advanced.ui
+++ b/src/yuzu/configuration/configure_input_advanced.ui
@@ -2728,6 +2728,22 @@
                      </widget>
                    </item>
                    <item row="7" column="0">
+                     <widget class="QCheckBox" name="random_amiibo_id">
+                       <property name="toolTip">
+                         <string>Allows unlimited uses of the same Amiibo in games that would otherwise limit you to one use.</string>
+                       </property>
+                       <property name="minimumSize">
+                         <size>
+                           <width>0</width>
+                           <height>23</height>
+                         </size>
+                       </property>
+                       <property name="text">
+                         <string>Use random Amiibo ID</string>
+                       </property>
+                     </widget>
+                   </item>
+                   <item row="8" column="0">
                      <widget class="QCheckBox" name="mouse_panning">
                        <property name="minimumSize">
                          <size>
@@ -2740,7 +2756,7 @@
                        </property>
                      </widget>
                    </item>
-                   <item row="7" column="2">
+                   <item row="8" column="2">
                      <widget class="QSpinBox" name="mouse_panning_sensitivity">
                        <property name="toolTip">
                          <string>Mouse sensitivity</string>
@@ -2762,14 +2778,14 @@
                        </property>
                      </widget>
                    </item>
-                   <item row="8" column="0">
+                   <item row="9" column="0">
                      <widget class="QLabel" name="motion_touch">
                        <property name="text">
                          <string>Motion / Touch</string>
                        </property>
                      </widget>
                    </item>
-                   <item row="8" column="2">
+                   <item row="9" column="2">
                      <widget class="QPushButton" name="buttonMotionTouch">
                        <property name="text">
                          <string>Configure</string>
diff --git a/src/yuzu_cmd/config.cpp b/src/yuzu_cmd/config.cpp
index abe7092fc..dc9a3d68f 100644
--- a/src/yuzu_cmd/config.cpp
+++ b/src/yuzu_cmd/config.cpp
@@ -169,6 +169,7 @@ void Config::ReadValues() {
     ReadSetting("ControlsGeneral", Settings::values.enable_raw_input);
     ReadSetting("ControlsGeneral", Settings::values.enable_joycon_driver);
     ReadSetting("ControlsGeneral", Settings::values.enable_procon_driver);
+    ReadSetting("ControlsGeneral", Settings::values.random_amiibo_id);
     ReadSetting("ControlsGeneral", Settings::values.emulate_analog_keyboard);
     ReadSetting("ControlsGeneral", Settings::values.vibration_enabled);
     ReadSetting("ControlsGeneral", Settings::values.enable_accurate_vibrations);