diff --git a/keyboards/fc660c/keymaps/vial/config.h b/keyboards/fc660c/keymaps/vial/config.h
new file mode 100644
index 0000000000..00131ba0e2
--- /dev/null
+++ b/keyboards/fc660c/keymaps/vial/config.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+#define VIAL_KEYBOARD_UID {0x86, 0xDA, 0x85, 0x0E, 0x54, 0x70, 0xA0, 0xA2}
+#define VIAL_UNLOCK_COMBO_ROWS { 1, 4 }
+#define VIAL_UNLOCK_COMBO_COLS { 3, 14 }
\ No newline at end of file
diff --git a/keyboards/fc660c/keymaps/vial/keymap.c b/keyboards/fc660c/keymaps/vial/keymap.c
new file mode 100644
index 0000000000..dbf75f4aae
--- /dev/null
+++ b/keyboards/fc660c/keymaps/vial/keymap.c
@@ -0,0 +1,46 @@
+/*
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT(
+        KC_ESC, KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS,KC_EQL, KC_BSPC,     KC_INS,
+        KC_TAB, KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_LBRC,KC_RBRC,KC_BSLS,     KC_DEL,
+        KC_CAPS,KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN,KC_QUOT,     KC_ENT,
+        KC_LSFT,KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, KC_SLSH,KC_RSFT,     KC_UP,
+        KC_LCTL,KC_LGUI,KC_LALT,                KC_SPC,                 KC_RALT,KC_RCTL,MO(1),       KC_LEFT,KC_DOWN,KC_RGHT
+    ),
+  [1] = LAYOUT(
+        KC_GRV, KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9,  KC_F10, KC_F11, KC_F12, _______,     _______,
+        _______,_______,_______,_______,RESET,  _______,_______,_______,KC_PSCR,KC_SLCK,KC_PAUS,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,KC_HOME,KC_PGUP,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,KC_END, KC_PGDN,_______,_______,     _______,
+        _______,_______,_______,                _______,                _______,_______,_______,     _______,_______,_______
+    ),
+  [2] = LAYOUT(
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,                _______,                _______,_______,_______,     _______,_______,_______
+    ),
+  [3] = LAYOUT(
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,_______,     _______,
+        _______,_______,_______,                _______,                _______,_______,_______,     _______,_______,_______
+    )
+};
diff --git a/keyboards/fc660c/keymaps/vial/rules.mk b/keyboards/fc660c/keymaps/vial/rules.mk
new file mode 100644
index 0000000000..79f95e7425
--- /dev/null
+++ b/keyboards/fc660c/keymaps/vial/rules.mk
@@ -0,0 +1,5 @@
+VIA_ENABLE = yes
+VIAL_ENABLE = yes
+LTO_ENABLE = yes
+QMK_SETTINGS = no
+TAP_DANCE_ENABLE = no
\ No newline at end of file
diff --git a/keyboards/fc660c/keymaps/vial/vial.json b/keyboards/fc660c/keymaps/vial/vial.json
new file mode 100644
index 0000000000..85e96c4eca
--- /dev/null
+++ b/keyboards/fc660c/keymaps/vial/vial.json
@@ -0,0 +1,16 @@
+{
+  "name": "FC660C",
+  "vendorId": "0x4853",
+  "productId": "0x660C",
+  "lighting": "none",
+  "matrix": { "rows": 5, "cols": 16 },
+  "layouts": {
+    "keymap": [
+      [{"c":"#777777"},"1,3",{"c":"#cccccc"},"1,0","1,1","1,2","1,4","1,6","1,7","1,5","1,11","1,8","1,9","1,10","1,12",{"c":"#aaaaaa","w":2},"1,14",{"x":0.5},"1,15"],
+      [{"c":"#aaaaaa","w":1.5},"0,3",{"c":"#cccccc"},"0,0","0,1","0,2","0,4","0,6","0,7","0,5","0,11","0,8","0,9","0,10","0,12",{"w":1.5},"0,14",{"x":0.5,"c":"#aaaaaa"},"0,15"],
+      [{"w":1.75},"4,3",{"c":"#cccccc"},"4,0","4,1","4,2","4,4","4,6","4,7","4,5","4,11","4,8","4,9","4,10",{"c":"#777777","w":2.25},"4,14"],
+      [{"c":"#aaaaaa","w":2.25},"3,3",{"c":"#cccccc"},"3,1","3,2","3,4","3,6","3,7","3,5","3,11","3,8","3,9","3,10",{"c":"#aaaaaa","w":2.25},"3,12",{"c":"#777777"},"3,13"],
+      [{"c":"#aaaaaa","w":1.25},"2,3",{"w":1.25},"2,1",{"w":1.25},"2,2",{"c":"#cccccc","w":6},"2,7",{"c":"#aaaaaa","w":1.25},"2,8",{"w":1.25},"2,10",{"w":1.25},"2,12",{"c":"#777777"},"2,14","2,13","2,15"]
+    ]
+  }
+}
\ No newline at end of file
diff --git a/keyboards/fc660c/matrix.c b/keyboards/fc660c/matrix.c
index 40d606f572..dc3196f39a 100644
--- a/keyboards/fc660c/matrix.c
+++ b/keyboards/fc660c/matrix.c
@@ -184,6 +184,12 @@ uint8_t matrix_scan(void)
     return 1;
 }
 
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & ((matrix_row_t)1<<col));
+}
+
 inline
 matrix_row_t matrix_get_row(uint8_t row) {
     return matrix[row];