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Hank Chow
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[#]: collector: (lujun9972)
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[#]: translator: (HankChow)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (Session: An Open Source Private Messenger That Doesn’t Need Your Phone Number)
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[#]: via: (https://itsfoss.com/session-messenger/)
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[#]: author: (Ankush Das https://itsfoss.com/author/ankush/)
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Session: An Open Source Private Messenger That Doesn’t Need Your Phone Number
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======
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_**Brief: Our open source software highlight of the week is Session. It is a fork of another increasingly popular private messenger Signal. Session doesn’t even need your phone number to operate.**_
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### Session: A private messenger in true sense
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![][1]
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Privacy concerned people are always in the search of an ultimate service that lets you communicate securely while respecting our privacy across multiple platforms.
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Recently, I came across an interesting open-source messaging app “[Session][2]” by [Loki Foundation][3], which is technically a fork of another [open source encrypted messenger Signal][4].
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In this article, I’ll be sharing my experience with the Session app while highlighting the features it offers.
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Session is fairly new to the scene – I’ve mentioned some of the bugs that I encountered at the bottom of the article.
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### Features of Session Messenger
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I’ll highlight the key features of Session that will help you decide if it’s good enough for you to try.
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#### Session does not require a phone number
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![][5]
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For privacy-enthusiasts, registering the phone number with Signal or other such applications is a potential risk.
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But, with Session, you do not need a phone number, simply click on “**Create Account**” after you install it on your desktop or phone and it will simply generate a random (unique) **Session ID**.
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It’ll look something like this: **05652245af9a8bfee4f5a8138fd5c……..**
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So, you just have to share your Session ID with the contact you want to add. Or, you can also opt to get the **QR Code** after account creation which you can share with your friends to add you back.
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#### Session uses blockchain (and other crypto tech)
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![Session ID][6]
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For the users who’re aware of what a [blockchain][7] is – they’ve been waiting for real-world applications that an average user can utilize. Session is one such example that utilizes blockchain at its core and you don’t need to know it’s there.
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If you’re curious about how it works, you can take a look at their [official blog post][8] explaining it.
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#### Cross-Platform Support
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![][9]
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For something strictly privacy-focused, you’d also want it to be available across multiple platforms.
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Of course, primarily, I’d focus on the Linux and Android support but it also supports Windows/Mac/iOS. So, you can easily sync between multiple devices cross-platform.
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#### Includes Essential Privacy Options
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![][10]
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Undoubtedly, it offers some essential privacy-focused features that will help make the experience more secure.
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For starters, you have the following options:
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* **Message TTL**: This lets you control how long the message exists before the recipient sees the message.
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* **Read Receipts**: Let others know that you’ve seen the message or if your message has been read.
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#### Session uses a decentralized network and protects your metadata
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Even though Session isn’t a peer-to-peer technology, it does not have a central server for the network.
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It takes a decentralized approach to how the messages are transmitted (or routed). If you’ve no idea what I’m talking about, you can follow Session’s official blog post to know the [difference between centralization and decentralization][11] and explore how it potentially works.
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And, this approach of network helps them to protect the metadata (the information associated with a message like IP address).
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#### Other Features
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Not just limited to the latest/greatest privacy-friendly features, but it also supports group chats, voice messages, and also allows you to send attachments.
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### Installing Session on Linux
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If you head to the [official download page][12], you will be able to download an .**AppImage** file. In case you have no clue how it works, you should take a look at our article on [how to use AppImage][13].
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In either case, you can also head to their [GitHub releases page][14] and grab the **.deb** file.
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[Download Session][12]
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### My Experience On Using Session App
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I’ve managed to try it on multiple platforms. For the desktop, I utilized the .AppImage file on **Pop!_OS 19.10** to run Session.
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Overall, the user experience was impressive and had no UI glitches.
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It’s also easy to recover your account once you’ve backed up your secret code (which is known as **seed**) from the settings.
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![][15]
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But, I also noticed a couple of issues- which can be fixed/improved:
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* Delay in accepting a friend request
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* The way of linking devices is not intuitive
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* Sometimes when you reply from two separate devices (using the same ID), the receiver gets two different conversations.
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**Conclusion**
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Of course, nothing’s ever perfect. For now, I’m thinking of keeping it installed and considering Session’s features, it is definitely something a privacy-focused user should try.
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What do you think about it? Feel free to let me know your thoughts in the comments below.
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--------------------------------------------------------------------------------
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via: https://itsfoss.com/session-messenger/
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作者：[Ankush Das][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://itsfoss.com/author/ankush/
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[b]: https://github.com/lujun9972
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[1]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-app.jpg?ssl=1
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[2]: https://getsession.org/
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[3]: https://loki.foundation/
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[4]: https://itsfoss.com/signal-messaging-app/
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[5]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-create.jpg?ssl=1
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[6]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2020/03/session-application-id.jpg?ssl=1
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[7]: https://en.wikipedia.org/wiki/Blockchain
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[8]: https://getsession.org/how-session-protects-your-anonymity-with-blockchain-and-crypto/
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[9]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-cross-platform.jpg?ssl=1
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[10]: https://i2.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-settings.jpg?fit=800%2C512&ssl=1
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[11]: https://getsession.org/centralisation-vs-decentralisation-in-private-messaging/
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[12]: https://getsession.org/download/
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[13]: https://itsfoss.com/use-appimage-linux/
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[14]: https://github.com/loki-project/session-desktop/releases
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[15]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-seed.jpg?ssl=1
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@ -0,0 +1,142 @@
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[#]: collector: (lujun9972)
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[#]: translator: (HankChow)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (Session: An Open Source Private Messenger That Doesn’t Need Your Phone Number)
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[#]: via: (https://itsfoss.com/session-messenger/)
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[#]: author: (Ankush Das https://itsfoss.com/author/ankush/)
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Session：一款不需要电话号码的开源通信应用
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======
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Signal 作为一款私人通信应用，正在变得愈发流行。而我们下面要介绍开源应用 Session 则是 Signal 的一个<ruby>复刻<rt>fork</rt></ruby>，它的一大亮点是并不需要提供手机号码即可以开始使用。
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### Session：一款真正意义上的私人通信应用
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![][1]
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对于私人通信服务来说，有没有既能保护通信安全性，又尊重用户跨平台隐私的集大成者呢？很多注重个人隐私的用户似乎都在寻找这个问题的答案。
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最近，我留意到 [Loki Foundation][3] 开发的一款叫做 [Session][2] 的开源通信应用。从技术上来说，Session 是另一款[开源、加密的通信应用 Signal][4] 的一个复刻。
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在本文中，我会讲述我自己使用 Session 的体验，以及 Session 的一些主要功能。
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Session 在这个领域中算是一款比较新的应用了，因此我还会在文章的最后提到它的一些不足之处。
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### Session 的一些主要功能
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接下来我会重点介绍 Session 的主要功能，可以供你参考这款应用是否值得使用。
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#### Session 的使用过程中不需要提供手机号码
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![][5]
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在 Signal 或者其它类似的通信应用中，用户都需要提供手机号码才得以成功注册。注重隐私的用户们都认为这样的做法会潜藏着巨大的安全隐患。
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而使用 Session 则简单得多。在 PC 或手机上安装应用之后，只需要点击“<ruby>创建账号<rt>Create Account</rt></ruby>”，无须提供手机号码，它就会生成一个类似 **05652245af9a8bfee4f5a8138fd5c……..** 这样的随机且唯一的 Session ID。
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此后，把 Session ID 分享给想要添加的联系人就可以了。Session 还支持二维码，其他人可以通过扫描二维码添加你的 Session ID 为好友。
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#### Session 使用了区块链等加密技术
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![Session ID][6]
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对[区块链][7]有所了解的用户都很期待区块链能为普罗大众做出什么有实际意义的应用，而 Session 可以算得上其中一个。尽管 Session 的核心是基于区块链的，但普通用户在使用时并不需要真正弄懂区块链。
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如果你好奇它的工作原理，可以参考这篇[官方的博客文章][8]，里面有相关的解释。
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#### 跨平台支持
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![][9]
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这样严格保护隐私的应用，是否能在不同平台上使用？
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答案是肯定的。首先，它支持 Linux 和 Android 平台，同时也支持 Windows/Mac/iOS 平台。因此跨平台、跨设备的消息同步是没有问题的。
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#### 包含基本隐私选项
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![][10]
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毫无疑问，基本的隐私功能是必须有的，这是作为一个以安全为卖点的应用所必备的体验。
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最基本的选项包括：
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* **消息有效期**：你可以控制一条消息在接收者阅读前的保留时长
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* **已读回执**：消息发送者可以知晓你已经阅读该消息
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#### Session 使用去中心化网络保护你的元数据
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尽管 Session 不使用<ruby>端对端<rt>peer-to-peer</rt></ruby>技术，但它也不适用中心化的服务器。
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Session 采用了去中心化的架构实现消息的传输和路由。如果你不熟悉这方面的内容，可以关注 Session 的官方博客，尝试了解[中心化网络和去中心化网络的区别][11]，以及它的实际工作原理。
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同时，这样的网络架构还有助于保护诸如与 IP 地址相关的信息等元数据。
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#### 其它功能
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除了专注于隐私之外，Session 也支持群聊、语音消息、发送附件等通信应用的基本功能。
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### 在 Linux 上安装 Session
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在[官方下载页面][12]中可以下载到对应的 .AppImage 文件。如果你不了解这个文件的使用方法，可以查阅我们的[相关文章][13]。
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另外，你也可以在它的 [Github 发布页面][14] 获取到对应的 .deb 安装文件。
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[下载 Session][12]
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### 我使用 Session 的体验
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我在各种平台上都试用过 Session，其中在 PC 上我使用了 Pop!_OS 19.10 的 .AppImage 文件运行这个应用。
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总的来说，使用的体验很不错，用户界面也没有出现问题。
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在设置中备份了密码（也称为<ruby>种子<rt>seed</rt></ruby>）后，可以很方便地恢复账号。
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![][15]
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当然，我也发现了一些需要改进的地方：
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* 在接受好友请求时会出现延迟
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* 设备间连接的方式不太直观
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* 当你在不同的设备上使用同一个 Session ID 向同一个人回复消息时，对方会收到两个不同的对话
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### 总结
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当然，最完美的事物是不存在的。我也会一直使用 Session 并考虑它发展的方向，这是一个注重引得的用户应该做的事情。
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欢迎在评论区发表你的看法。
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--------------------------------------------------------------------------------
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via: https://itsfoss.com/session-messenger/
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作者：[Ankush Das][a]
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选题：[lujun9972][b]
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译者：[HankChow](https://github.com/HankChow)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://itsfoss.com/author/ankush/
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[b]: https://github.com/lujun9972
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[1]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-app.jpg?ssl=1
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[2]: https://getsession.org/
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[3]: https://loki.foundation/
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[4]: https://itsfoss.com/signal-messaging-app/
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[5]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-create.jpg?ssl=1
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[6]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2020/03/session-application-id.jpg?ssl=1
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[7]: https://en.wikipedia.org/wiki/Blockchain
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[8]: https://getsession.org/how-session-protects-your-anonymity-with-blockchain-and-crypto/
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[9]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-cross-platform.jpg?ssl=1
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[10]: https://i2.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-settings.jpg?fit=800%2C512&ssl=1
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[11]: https://getsession.org/centralisation-vs-decentralisation-in-private-messaging/
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[12]: https://getsession.org/download/
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[13]: https://itsfoss.com/use-appimage-linux/
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[14]: https://github.com/loki-project/session-desktop/releases
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[15]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2020/02/session-seed.jpg?ssl=1
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