简要结论The short version
- 遮挡核心功能无需注册账号；试用、购买与许可证激活会使用沐幕的授权服务。Core masking requires no account; trials, purchases, and license activation use Muvail's licensing service.
- 字幕遮挡、快捷键、窗口位置与偏好设置都在本地处理。Subtitle masking, shortcuts, window positions, and preferences are handled locally.
- 当前应用没有遥测、广告或应用内分析功能。The current app includes no telemetry, advertising, or in-app analytics.
- 当前官网没有广告、分析脚本或营销 Cookie。The current website includes no advertising, analytics scripts, or marketing cookies.
应用在本地保存什么What the app stores locally
为了恢复你的使用状态，沐幕会在 Windows 用户目录中保存应用语言、遮挡布局、材质、颜色主题、提示选项与开机启动等偏好。这些信息用于应用功能，不会由当前版本自动上传。To restore your setup, Muvail stores preferences such as app language, mask layout, material, color theme, hints, and startup behavior in your Windows user profile. The current version does not automatically upload this information.
为了诊断启动、显示与兼容性故障，当前版本会在 %LOCALAPPDATA%\SubtitleMask\logs\startup.log 写入本地启动日志。日志可能包含时间、显示环境、恢复原因与异常堆栈；它不会由当前版本自动上传。安装程序也可能在 Windows 临时目录生成本地安装日志。To diagnose startup, display, and compatibility failures, the current release writes a local startup log at %LOCALAPPDATA%\SubtitleMask\logs\startup.log. It may include timestamps, display context, recovery reasons, and exception details; the current release does not upload it automatically. Setup may also create a local installation log in the Windows temporary folder.
沐幕不会读取或修改视频、音频与字幕文件，也不会自动识别或翻译屏幕上的文字。Muvail does not read or modify video, audio, or subtitle files, and it does not automatically recognize or translate text on your screen.
官网会在浏览器中保存什么What the website stores in your browser
本官网使用浏览器的本地存储记住中文或英文显示选择，键名为 muvail-language。这项信息留在你的浏览器中，你可以通过清除该网站的浏览数据将其删除。This website uses browser local storage to remember whether you selected Chinese or English, under the key muvail-language. It remains in your browser and can be removed by clearing this site's browsing data.
发起购买时，本官网还会在当前标签页的会话存储中临时保存一个高强度随机订单查询凭证，用于支付后查询该订单。关闭相关浏览会话或清除网站数据即可移除。When a purchase is started, the site temporarily stores a high-entropy order-status credential in session storage so this browser can check that order after payment. Closing the relevant browser session or clearing site data removes it.
试用、购买与许可证数据Trial, purchase, and license data
当你主动使用这些服务时，我们会处理购买邮箱、产品与支付渠道、商户订单号、支付平台订单或客户标识、金额、币种、支付状态、许可证状态、激活时间、你在设备上提供的设备名称、应用版本与平台类型。支付卡号、微信或支付宝登录凭据由相应支付平台处理，沐幕服务器不保存这些凭据。When you choose to use these services, we process the purchase email, product and payment channel, merchant order ID, provider order or customer identifiers, amount, currency, payment status, license status, activation time, the device name you provide on that device, app version, and platform type. Card numbers and WeChat or Alipay login credentials are handled by the payment provider and are not stored by Muvail's server.
为执行两台设备限制与防止普通重装重置试用，应用会在系统凭据库中保存一个随机种子，并只向服务器提交由该种子单向派生的匿名设备标识；MachineGuid、SID、UID、硬件 UUID、序列号等原始系统或硬件标识不会上传。服务器再使用私有密钥对匿名标识进行单向 HMAC，数据库只保存该 HMAC。许可证正文以加密形式保存，日志中只允许出现遮罩后的许可证。To enforce the two-device limit and prevent an ordinary reinstall from resetting a trial, the app keeps a random seed in the OS credential vault and sends only a one-way pseudonymous device identifier derived from that seed. Raw system or hardware identifiers such as MachineGuid, SID, UID, hardware UUID, and serial numbers are not uploaded. The server applies a private-key HMAC to the pseudonymous identifier and stores only that HMAC. License values are encrypted and may appear in logs only in masked form.
当你申请远程管理已激活设备时，交易邮件服务商会向购买邮箱发送一次性链接。链接凭证与随后 15 分钟内使用的临时会话凭证只以 SHA-256 摘要保存在服务器；链接凭证放在网址片段中，不随网页请求发送。临时会话可以查看设备名称、平台、应用版本、激活与最近验证时间，并释放所选设备席位；浏览器只在当前标签页的 sessionStorage 中临时保存会话凭证。When you request remote management of activated devices, the transactional email provider sends a single-use link to the purchase email. Only SHA-256 digests of the link credential and the following 15-minute session credential are stored on the server; the link credential is placed in the URL fragment and is not sent with the page request. The temporary session can view device name, platform, app version, activation and last-validation times, and release a selected seat; the browser keeps the session credential only temporarily in that tab's sessionStorage.
服务不会收集屏幕画面、视频、音频、字幕内容、浏览记录、文件内容或全局快捷键输入。支付通知会经过签名验证并以事件标识去重，安全审计只记录完成授权所需的最小状态。The service does not collect screen images, video, audio, subtitle content, browsing history, file contents, or global shortcut input. Payment notifications are signature-verified and deduplicated by event ID; security auditing records only the minimum state needed for fulfilment.
为限制自动化滥用，授权与购买接口会使用服务端私有 HMAC 将请求网络地址派生为限流键，并只保存限流范围、时间桶、计数与过期时间；业务审计记录不保存原始网络地址。托管服务商仍可能按下文说明保留标准访问日志。To limit automated abuse, licensing and checkout endpoints use a server-secret HMAC to derive a rate-limit key from the request network address and store only the scope, time bucket, count, and expiry. Business audit records do not store the raw network address. The hosting provider may still retain standard access logs as described below.
服务商与保留期限Service providers and retention
支付服务商处理付款并向我们返回订单状态；交易邮件服务商用于发送或恢复许可证；托管与数据库服务商负责运行官网和授权接口。最终启用的服务商与商户主体会在正式收款前公布。Payment providers process payment and return order status; a transactional email provider delivers or recovers licenses; hosting and database providers run the site and licensing API. The final providers and merchant identity will be published before payments open.
订单、授权与安全记录会在提供许可证、处理退款和争议、防止欺诈及履行适用财税义务所需期间保留。你可以通过下方邮箱提出访问、更正或删除请求；适用法律、退款争议与反欺诈要求可能限制立即删除。Order, entitlement, and security records are retained as needed to provide licenses, handle refunds and disputes, prevent fraud, and meet applicable tax or legal obligations. You may request access, correction, or deletion by email below; applicable law, refund disputes, and anti-fraud requirements may limit immediate deletion.
下载与服务器日志Downloads and server logs
当官网部署到托管服务后，托管商可能出于安全、可靠性与流量传输需要，自动记录 IP 地址、访问时间、浏览器类型、请求页面和下载结果等标准服务器信息。具体保留范围与时间取决于所使用的托管服务。本项目不会把这些日志用于跨网站追踪或广告画像。Once this site is deployed through a hosting provider, that provider may automatically log standard server information such as IP address, access time, browser type, requested page, and download result for security, reliability, and traffic delivery. Scope and retention depend on the selected host. The project does not use those logs for cross-site tracking or advertising profiles.
你主动发送的信息Information you choose to send
如果你通过反馈邮箱联系，我们会收到你主动填写的邮箱地址、邮件正文和附件。这些内容仅用于阅读、回复与处理问题。请不要发送密码、身份证件、付款信息或与问题无关的敏感资料。If you contact the feedback address, we receive the email address, message, and attachments you choose to provide. They are used to read, respond to, and resolve your request. Do not send passwords, identity documents, payment details, or unrelated sensitive information.
卸载与删除Uninstalling and deleting data
你可以从 Windows 设置中卸载沐幕。为保留升级或重新安装时的布局，卸载程序目前不会自动删除 %APPDATA%\SubtitleMask 中的偏好与布局，也不会自动删除 %LOCALAPPDATA%\SubtitleMask\logs 中的本地日志。若要彻底清除，请先退出沐幕、完成卸载，再手动删除这两个目录。You can uninstall Muvail from Windows Settings. To preserve layouts for an update or reinstall, the uninstaller currently leaves preferences and layouts in %APPDATA%\SubtitleMask and local logs in %LOCALAPPDATA%\SubtitleMask\logs. To remove them completely, exit Muvail, uninstall it, and then delete those two folders manually.
浏览器中的官网语言选择可通过清除网站数据删除。若希望删除曾通过邮件发送的反馈内容，可通过原邮箱提出请求；是否能够完整删除还会受到邮箱服务备份与适用法律要求的限制。The site's language preference can be removed by clearing website data in your browser. To request deletion of feedback previously sent by email, write from the original address; complete deletion may still be limited by email-service backups and applicable legal requirements.
更新与联系Updates and contact
本说明会随应用或官网功能变化而更新。重大变化会在这一页面标明。隐私相关问题请发送至 muvail@163.com。This notice may change as the app or website evolves. Material changes will be identified on this page. For privacy questions, email muvail@163.com.
更新日期：Last updated: 2026-07-23