diff --git a/src/cubing/bluetooth/connect/index.ts b/src/cubing/bluetooth/connect/index.ts
index 1f2f79d44..885ecc4ad 100644
--- a/src/cubing/bluetooth/connect/index.ts
+++ b/src/cubing/bluetooth/connect/index.ts
@@ -1,4 +1,5 @@
 import { debugLog } from "../debug";
+import { getMacAddressProvider, type MacAddressProviderOption } from "../mac";
 import type { BluetoothConfig } from "../smart-puzzle/bluetooth-puzzle";
 
 /******** requestOptions ********/
@@ -32,6 +33,7 @@ function requestOptions<T>(
 
 export interface BluetoothConnectOptions {
   acceptAllDevices?: boolean;
+  macAddressProvider?: MacAddressProviderOption;
 }
 
 // We globally track the number of connection failures,
@@ -83,10 +85,14 @@ export async function bluetoothConnect<T>(
   for (const config of configs) {
     for (const prefix of config.prefixes) {
       if (name?.startsWith(prefix)) {
-        return config.connect(server, device);
+        return config.connect({
+          server,
+          device,
+          macAddressProvider: getMacAddressProvider(options.macAddressProvider),
+        });
       }
     }
   }
 
-  throw Error("Unknown Bluetooth devive.");
+  throw Error("Unknown Bluetooth device.");
 }
diff --git a/src/cubing/bluetooth/mac.ts b/src/cubing/bluetooth/mac.ts
new file mode 100644
index 000000000..377a44203
--- /dev/null
+++ b/src/cubing/bluetooth/mac.ts
@@ -0,0 +1,142 @@
+/**
+ * Type of MAC address provider to use when a bluetooth device's MAC address
+ * is needed and cannot automatically be determined, and as a fallback when
+ * automatically determining the MAC address fails.
+ *
+ * - `"PROMPT"`: Use the built-in prompt-based provider (default).
+ * - `"DIALOG"`: Use the built-in dialog-based provider.
+ * - {@link MacAddressProvider}: Use a custom MAC address provider.
+ */
+export type MacAddressProviderOption =
+  | "PROMPT"
+  | "DIALOG"
+  | MacAddressProvider
+  | undefined;
+
+/** Type representing a custom MAC address provider for bluetooth devices */
+export type MacAddressProvider = () => Promise<string>;
+
+/**
+ * An error that should be thrown by a {@link MacAddressProvider} to
+ * signal that the user cancelled entering a MAC address.
+ */
+export class MacAddressCancelledError extends Error {}
+
+/**
+ * Converts a {@link MacAddressProviderOption} to a {@link MacAddressProvider},
+ * using `"PROMPT"` as the default option.
+ * @param macAddressProviderOption {@link MacAddressProviderOption} provided by the user.
+ * @returns final MAC address provider that can be called by bluetooth device configs
+ */
+export function getMacAddressProvider(
+  macAddressProviderOption: MacAddressProviderOption,
+): MacAddressProvider {
+  macAddressProviderOption ||= "PROMPT";
+
+  let provider: MacAddressProvider;
+  switch (macAddressProviderOption) {
+    case "DIALOG":
+      provider = dialogMacAddressProvider;
+      break;
+
+    case "PROMPT":
+      provider = promptMacAddressProvider;
+      break;
+
+    default:
+      provider = macAddressProviderOption;
+      break;
+  }
+
+  return async () => {
+    const macAddress = (await provider()).trim();
+    validateMacAddress(macAddress);
+    return macAddress;
+  };
+}
+
+const MAC_ADDRESS_REGEX = /^[0-9a-fA-F]{2}(?::[0-9a-fA-F]{2}){5}$/;
+
+/**
+ * Validates the MAC address returned by a {@link MacAddressProvider}.
+ * @param macAddress MAC address returned by a {@link MacAddressProvider}
+ * @throws error if the MAC address is invalid
+ */
+function validateMacAddress(macAddress: string) {
+  if (!MAC_ADDRESS_REGEX.test(macAddress)) {
+    throw new Error(`Invalid MAC address: ${macAddress}`);
+  }
+}
+
+/**
+ * Default prompt-based MAC address provider
+ * @returns Bluetooth device MAC address
+ */
+export async function promptMacAddressProvider(): Promise<string> {
+  while (true) {
+    const address = prompt(
+      "Enter your bluetooth device's MAC address:",
+    )?.trim();
+    if (address === undefined) {
+      // User cancelled prompt
+      throw new MacAddressCancelledError();
+    }
+    const isValidMacAddress = MAC_ADDRESS_REGEX.test(address);
+    if (isValidMacAddress) {
+      return address;
+    }
+  }
+}
+
+/**
+ * Default dialog-based MAC address provider
+ * @returns Bluetooth device MAC address
+ */
+export function dialogMacAddressProvider(): Promise<string> {
+  return new Promise((resolve, reject) => {
+    // TODO: Replace with a cleaner web component implementation
+    const dialog = document.createElement("dialog");
+
+    // TODO: Add custom CSS styles
+    dialog.innerHTML = `
+      <h2>Enter your bluetooth device's MAC address</h2>
+      <form>
+        <input type="text" placeholder="MAC Address">
+        <p style="color: red;"></p>
+        <button type="submit">Submit</button>
+      </form>
+    `;
+
+    document.querySelector("body")!.appendChild(dialog);
+    const feedback = dialog.querySelector("p")!;
+    const macInput = dialog.querySelector("input")!;
+
+    const button = dialog.querySelector("button")!;
+
+    const validateInput = () => {
+      if (!MAC_ADDRESS_REGEX.test(macInput.value)) {
+        feedback.textContent = "Invalid MAC address.";
+        button.disabled = true;
+      } else {
+        feedback.textContent = "";
+        button.disabled = false;
+      }
+    };
+
+    macInput.addEventListener("keyup", validateInput);
+    validateInput();
+
+    dialog.querySelector("form")!.addEventListener("submit", (e) => {
+      e.preventDefault();
+      document.querySelector("body")!.removeChild(dialog);
+      resolve(macInput.value);
+    });
+
+    // TODO: clean up error handling
+    dialog.addEventListener("close", () =>
+      reject(new MacAddressCancelledError()),
+    );
+
+    dialog.showModal();
+  });
+}
diff --git a/src/cubing/bluetooth/smart-puzzle/Heykube.ts b/src/cubing/bluetooth/smart-puzzle/Heykube.ts
index a664a66ff..2254d1c5c 100644
--- a/src/cubing/bluetooth/smart-puzzle/Heykube.ts
+++ b/src/cubing/bluetooth/smart-puzzle/Heykube.ts
@@ -9,7 +9,11 @@ import {
 } from "../../protocol";
 import { puzzles } from "../../puzzles";
 import { debugLog } from "../debug";
-import { type BluetoothConfig, BluetoothPuzzle } from "./bluetooth-puzzle";
+import {
+  type BluetoothConfig,
+  BluetoothPuzzle,
+  type ConnectionArguments,
+} from "./bluetooth-puzzle";
 import { flipBitOrder } from "./endianness";
 
 // TODO: Short IDs
@@ -22,10 +26,10 @@ const UUIDs = {
 /** @category Smart Puzzles */
 export class HeykubeCube extends BluetoothPuzzle {
   // We have to perform async operations before we call the constructor.
-  public static async connect(
-    server: BluetoothRemoteGATTServer,
-    device: BluetoothDevice,
-  ): Promise<HeykubeCube> {
+  public static async connect({
+    server,
+    device,
+  }: ConnectionArguments): Promise<HeykubeCube> {
     const service = await server.getPrimaryService(UUIDs.heykubeService);
     debugLog("Service:", service);
 
diff --git a/src/cubing/bluetooth/smart-puzzle/bluetooth-puzzle.ts b/src/cubing/bluetooth/smart-puzzle/bluetooth-puzzle.ts
index dc2b5a817..5fa20cd56 100644
--- a/src/cubing/bluetooth/smart-puzzle/bluetooth-puzzle.ts
+++ b/src/cubing/bluetooth/smart-puzzle/bluetooth-puzzle.ts
@@ -1,5 +1,6 @@
 import type { AlgLeaf } from "../../alg/alg-nodes/AlgNode";
 import type { KPattern } from "../../kpuzzle/KPattern";
+import type { MacAddressProvider } from "../mac";
 import {
   BasicRotationTransformer,
   type StreamTransformer,
@@ -31,16 +32,14 @@ export interface OrientationEvent {
   debug?: Record<string, unknown>;
 }
 
+export type ConnectionArguments = {
+  server: BluetoothRemoteGATTServer;
+  device: BluetoothDevice;
+  macAddressProvider: MacAddressProvider;
+};
+
 export interface BluetoothConfig<T> {
-  connect:
-    | ((
-        server: BluetoothRemoteGATTServer,
-        device: BluetoothDevice,
-      ) => Promise<T>)
-    | ((
-        server: BluetoothRemoteGATTServer,
-        device?: BluetoothDevice,
-      ) => Promise<T>);
+  connect: (connectionArguments: ConnectionArguments) => Promise<T>;
   // TODO: Can we reuse `filters`?
   prefixes: string[]; // `[""]` for GiiKER
   filters: BluetoothLEScanFilter[];
diff --git a/src/cubing/bluetooth/smart-puzzle/gan.ts b/src/cubing/bluetooth/smart-puzzle/gan.ts
index afb4e2487..5c58a7b7d 100644
--- a/src/cubing/bluetooth/smart-puzzle/gan.ts
+++ b/src/cubing/bluetooth/smart-puzzle/gan.ts
@@ -9,7 +9,11 @@ import {
   unsafeDecryptBlock,
 } from "../../vendor/public-domain/unsafe-raw-aes/unsafe-raw-aes";
 import { debugLog } from "../debug";
-import { type BluetoothConfig, BluetoothPuzzle } from "./bluetooth-puzzle";
+import {
+  type BluetoothConfig,
+  BluetoothPuzzle,
+  type ConnectionArguments,
+} from "./bluetooth-puzzle";
 import { getPatternData } from "./common";
 
 // This needs to be short enough to capture 6 moves (OBQTM).
@@ -238,9 +242,9 @@ async function getKey(
 /** @category Smart Puzzles */
 export class GanCube extends BluetoothPuzzle {
   // We have to perform async operations before we call the constructor.
-  public static async connect(
-    server: BluetoothRemoteGATTServer,
-  ): Promise<GanCube> {
+  public static async connect({
+    server,
+  }: ConnectionArguments): Promise<GanCube> {
     const ganCubeService = await server.getPrimaryService(UUIDs.ganCubeService);
     debugLog("Service:", ganCubeService);
 
diff --git a/src/cubing/bluetooth/smart-puzzle/giiker.ts b/src/cubing/bluetooth/smart-puzzle/giiker.ts
index 77e1b6ec7..5454c2c71 100644
--- a/src/cubing/bluetooth/smart-puzzle/giiker.ts
+++ b/src/cubing/bluetooth/smart-puzzle/giiker.ts
@@ -4,7 +4,11 @@ import { Move } from "../../alg";
 import { KPattern, type KPatternData } from "../../kpuzzle";
 import { experimental3x3x3KPuzzle } from "../../puzzles/cubing-private";
 import { debugLog } from "../debug";
-import { type BluetoothConfig, BluetoothPuzzle } from "./bluetooth-puzzle";
+import {
+  type BluetoothConfig,
+  BluetoothPuzzle,
+  type ConnectionArguments,
+} from "./bluetooth-puzzle";
 
 const MESSAGE_LENGTH = 20;
 
@@ -112,9 +116,9 @@ async function decodeState(data: Uint8Array): Promise<Uint8Array> {
 
 /** @category Smart Puzzles */
 export class GiiKERCube extends BluetoothPuzzle {
-  public static async connect(
-    server: BluetoothRemoteGATTServer,
-  ): Promise<GiiKERCube> {
+  public static async connect({
+    server,
+  }: ConnectionArguments): Promise<GiiKERCube> {
     const cubeService = await server.getPrimaryService(UUIDs.cubeService);
     debugLog("Service:", cubeService);
 
diff --git a/src/cubing/bluetooth/smart-puzzle/gocube.ts b/src/cubing/bluetooth/smart-puzzle/gocube.ts
index 1aeb27b82..ff754fb8d 100644
--- a/src/cubing/bluetooth/smart-puzzle/gocube.ts
+++ b/src/cubing/bluetooth/smart-puzzle/gocube.ts
@@ -1,7 +1,11 @@
 import { Quaternion } from "three/src/math/Quaternion.js";
 import { Alg, experimentalAppendMove, Move } from "../../alg";
 import { debugLog } from "../debug";
-import { type BluetoothConfig, BluetoothPuzzle } from "./bluetooth-puzzle";
+import {
+  type BluetoothConfig,
+  BluetoothPuzzle,
+  type ConnectionArguments,
+} from "./bluetooth-puzzle";
 
 const UUIDs = {
   goCubeService: "6e400001-b5a3-f393-e0a9-e50e24dcca9e",
@@ -45,9 +49,9 @@ const moveMap: Move[] = [
 /** @category Smart Puzzles */
 export class GoCube extends BluetoothPuzzle {
   // We have to perform async operations before we call the constructor.
-  public static async connect(
-    server: BluetoothRemoteGATTServer,
-  ): Promise<GoCube> {
+  public static async connect({
+    server,
+  }: ConnectionArguments): Promise<GoCube> {
     const service = await server.getPrimaryService(UUIDs.goCubeService);
     debugLog({ service });
     const goCubeStateCharacteristic = await service.getCharacteristic(
diff --git a/src/cubing/bluetooth/smart-puzzle/qiyi.ts b/src/cubing/bluetooth/smart-puzzle/qiyi.ts
index 164a015d1..c10247e53 100644
--- a/src/cubing/bluetooth/smart-puzzle/qiyi.ts
+++ b/src/cubing/bluetooth/smart-puzzle/qiyi.ts
@@ -8,7 +8,11 @@ import {
   unsafeDecryptBlock,
   unsafeEncryptBlock,
 } from "../../vendor/public-domain/unsafe-raw-aes/unsafe-raw-aes";
-import { type BluetoothConfig, BluetoothPuzzle } from "./bluetooth-puzzle";
+import {
+  type BluetoothConfig,
+  BluetoothPuzzle,
+  type ConnectionArguments,
+} from "./bluetooth-puzzle";
 import { getPatternData } from "./common";
 
 const UUIDs = {
@@ -230,9 +234,9 @@ export class QiyiCube extends BluetoothPuzzle {
   ];
   private batteryLevel: number = 100;
 
-  public static async connect(
-    server: BluetoothRemoteGATTServer,
-  ): Promise<BluetoothPuzzle> {
+  public static async connect({
+    server,
+  }: ConnectionArguments): Promise<BluetoothPuzzle> {
     const aesKey = await importKey(
       new Uint8Array([
         87, 177, 249, 171, 205, 90, 232, 167, 156, 185, 140, 231, 87, 140, 81,
diff --git a/src/cubing/bluetooth/smart-robot/GanRobot.ts b/src/cubing/bluetooth/smart-robot/GanRobot.ts
index 83a381938..3ed0ac9e8 100644
--- a/src/cubing/bluetooth/smart-robot/GanRobot.ts
+++ b/src/cubing/bluetooth/smart-robot/GanRobot.ts
@@ -1,6 +1,9 @@
 import { Alg, Move as AlgNode, Move } from "../../alg";
 import { cube3x3x3 } from "../../puzzles";
-import type { BluetoothConfig } from "../smart-puzzle/bluetooth-puzzle";
+import type {
+  BluetoothConfig,
+  ConnectionArguments as BluetoothConnectionArguments,
+} from "../smart-puzzle/bluetooth-puzzle";
 
 // TODO: Remove this. It's only used for debugging.
 function buf2hex(buffer: ArrayBuffer | Uint8Array): string {
@@ -132,10 +135,7 @@ export class GanRobot extends EventTarget {
   }
 
   // We have to perform async operations before we call the constructor.
-  static async connect(
-    server: BluetoothRemoteGATTServer,
-    device: BluetoothDevice,
-  ) {
+  static async connect({ server, device }: BluetoothConnectionArguments) {
     const ganTimerService = await server.getPrimaryService(
       UUIDs.ganRobotService,
     );
diff --git a/src/cubing/bluetooth/smart-timer/GanTimer.ts b/src/cubing/bluetooth/smart-timer/GanTimer.ts
index 717a3e6aa..5ebd515b2 100644
--- a/src/cubing/bluetooth/smart-timer/GanTimer.ts
+++ b/src/cubing/bluetooth/smart-timer/GanTimer.ts
@@ -1,5 +1,8 @@
 import type { MillisecondTimestamp } from "../../twisty/controllers/AnimationTypes";
-import type { BluetoothConfig } from "../smart-puzzle/bluetooth-puzzle";
+import type {
+  BluetoothConfig,
+  ConnectionArguments,
+} from "../smart-puzzle/bluetooth-puzzle";
 
 // TODO: Short IDs
 const UUIDs = {
@@ -37,10 +40,7 @@ export class GanTimer extends EventTarget {
   }
 
   // We have to perform async operations before we call the constructor.
-  static async connect(
-    server: BluetoothRemoteGATTServer,
-    device: BluetoothDevice,
-  ) {
+  static async connect({ server, device }: ConnectionArguments) {
     const ganTimerService = await server.getPrimaryService(
       UUIDs.ganTimerService,
     );