MDK 隐私政策

中文

一、我们收集什么信息

我们什么都不收集。 MDK 不需要注册账号，不要求登录，不访问你的通讯录、照片、位置或任何其他个人数据。应用内不存在任何数据统计、行为分析或广告 SDK。

二、蓝牙的使用方式

MDK 是一款蓝牙遥控器，它的工作方式是：把你的手机变成一个蓝牙广播设备（外设），向周围发送控制指令，附近的 LED 警示灯条接收后执行相应动作。

• 这些蓝牙广播是单向发送的，设备之间不建立连接配对；
• 广播内容只包含方向、亮度模式等控制指令，不含任何身份信息；
• 广播数据仅存在于蓝牙信号覆盖范围内，不会经过互联网，也不会发送到任何服务器。

本应用不需要网络连接，全部功能离线可用。蓝牙广播仅在 App 处于前台打开状态时进行；切到其他 App、返回桌面或锁屏后即自动停止，不申请也不使用任何后台运行权限。首次使用时系统会请求蓝牙权限，若你拒绝，界面仍可查看但无法控制灯条。你可以随时在系统「设置 → 隐私与安全性 → 蓝牙」中撤回该权限。

三、本地存储的数据

MDK 会在你的手机本地保存一个随机生成的遥控器编号（3 字节随机数），用于在多台遥控器同时使用时区分身份。这个编号：

• 在你第一次安装应用时随机生成，之后保持不变；
• 仅保存在本机（iOS 系统偏好设置中），不会上传；
• 与你的 Apple ID、设备序列号或任何个人身份毫无关联；
• 卸载应用后即被清除，重新安装会生成一个新的随机编号。

四、第三方服务

MDK 未接入任何第三方 SDK，包括统计分析、崩溃上报、广告推送和社交分享。应用不包含任何网页追踪代码。

五、儿童隐私

MDK 不面向 13 岁以下儿童，也不会有意收集儿童的任何信息。

六、政策更新

若未来功能调整导致本政策发生变化，我们会在此页面更新内容并修改「最后更新」日期。

七、联系我们

如对本隐私政策有疑问，请通过下方邮箱与我们联系。

ENGLISH

1. Information We Collect

We collect nothing. MDK requires no account, no sign-in, and does not access your contacts, photos, location, or any other personal data. The app contains no analytics, no tracking SDKs, and no advertising components.

2. How Bluetooth Is Used

MDK is a Bluetooth remote control. It turns your phone into a Bluetooth peripheral that advertises control commands; nearby LED warning light bars receive those commands and act on them.

• These advertisements are one-way broadcasts — no pairing or connection is established;
• The payload contains only control data such as direction and brightness mode, with no identifying information;
• Advertisements exist only within Bluetooth range and never travel over the internet or to any server.

The app requires no network connection and is fully functional offline. Advertising occurs only while the app is open in the foreground; it stops automatically when you switch apps, return to the Home Screen, or lock the device. MDK requests no background execution modes. Bluetooth permission is requested on first use; if you decline, the interface remains viewable but the light bar cannot be controlled. You may revoke this permission at any time in Settings → Privacy & Security → Bluetooth.

3. Data Stored Locally

MDK stores a randomly generated remote ID (a 3-byte random number) on your device, used to distinguish between multiple remotes operating at the same time. This ID:

• Is generated randomly on first install and remains stable afterwards;
• Is stored only on your device (iOS UserDefaults) and never uploaded;
• Is not linked to your Apple ID, device serial number, or any personal identity;
• Is removed when you delete the app; a fresh random ID is created on reinstall.

4. Third-Party Services

MDK integrates no third-party SDKs — no analytics, no crash reporting, no advertising, no social sharing. The app contains no web tracking code.

5. Children's Privacy

MDK is not directed at children under 13, and we do not knowingly collect any information from children.

6. Changes to This Policy

If future feature changes affect this policy, we will update this page and revise the "Last Updated" date above.

7. Contact Us

If you have questions about this Privacy Policy, please reach us at the email address below.