曾经用消失的墨水给你的朋友写信息，这样你就不用担心你的秘密泄露了？这就是 Facebook Messenger 的自毁消息对您从设备发送的文本、照片或视频的作用。(texts and photos)
这些消息也称为临时消息，可确保您发送的任何内容在消费的几分钟或几秒钟内被删除。这发生在两个设备上，以及系统服务器上，而不存储对话的持久记录。
加密和强密码墙等多种技术共同用于发送、编码、接收和销毁文本(receive and destroy texts)、照片或视频(photos or videos)和其他附件。
自毁信息很有吸引力且很受欢迎，尤其是在年轻一代中，但是成年人使用它们来保护他们的个人隐私。其他积极的用例包括举报，或就纪律或刑事问题等敏感问题进行沟通。
您还可以使用它们来防止窥探者阅读他们不应该阅读的消息，或者在情绪激动的时刻（如配偶争吵）很容易发送可用来对付您的苛刻文本。
没有什么可以阻止收件人在查看邮件时截取屏幕截图或外部副本，因此无法保证邮件未被(message hasn)记录，但您确实获得了接近 100 % 的隐私(percent privacy)。
Facebook Messenger 的自毁消息是如何工作的(Self-Destructing Messages Work)
Facebook Messenger 应用程序(Facebook Messenger app)具有秘密对话功能(Secret Conversations feature)，可让您向一个人发送私人消息，同时通过特殊加密保护您的隐私。
加密旨在保护消息，因此只有您和您的收件人可以查看或播放它 - 甚至Facebook都无法访问它。您还可以在邮件中添加计时器或过期(timer or expiration)时间，以便在收件人看到后，它可以在您指定的时间内自毁。
在您的消息列表(message list)中，所有秘密对话都会在联系人的个人资料图标(profile icon)旁边显示一个挂锁图标(padlock icon)。气泡是黑色的，而不是普通Facebook聊天中通常的蓝色，您可以在新聊天或现有聊天中开始一个。
但是，如果此人不是您的Facebook 朋友或 Facebook(Facebook friend or Facebook)认为您不认识该联系人，您的秘密消息将被发送到他们的消息请求或在过滤的消息下显示为垃圾邮件(Filtered Messages)。邮件不会被删除，但会保存在隐藏邮箱中。
(Set Up)在Messenger中(Messenger)设置自毁消息
秘密对话只能在Android 和 iOS的(Android and iOS)Messenger 应用程序(Messenger app)中创建，因此您不会在messenger.com 或 Facebook(messenger.com or Facebook)聊天中找到它们。它们在Facebook Messenger Lite 应用程序(Facebook Messenger Lite app)中也不可用。
此外，您只能在创建它们的设备上访问对话。例如，您不能在 iPhone 上开始秘密聊天，然后在 iPad 上继续聊天。
但是，您可以添加其他设备来发送消息，但您不会在该设备上看到以前的消息。对方会收到通知，但只有现有对话中的新消息会出现在所有设备上。
创建秘密对话的过程会略有不同，具体取决于您的设备是Android 还是 iOS(Android or iOS)。我们将分别查看每个说明。
安卓(Android)
在发送秘密对话之前，请确保您已在手机或平板电脑上安装了最新版本的(phone or tablet)Facebook Messenger应用程序。如果您没有看到消失的对话选项，请从Google Play 商店(Google Play Store)下载最新版本。
打开Messenger去聊天( Chats)
点击屏幕右上角的铅笔图标(pencil icon)
点击挂锁图标(padlock icon)
选择你想发消息的人(person)
您可以点击出现的文本框中的(text box)计时器图标(timer icon)，并设置一个时间或到期时间(time or expiration)（例如 5 秒、10 秒），在该时间或到期时间（例如 5 秒、10 秒），一旦收件人消费了该消息，该消息就会消失
您的秘密对话将变得模糊，底部会出现一条消息（红色），显示过期时间（以秒为单位）
iOS（iPhone 或 iPad）(iOS (iPhone or iPad))
打开Messenger 应用程序(Messenger app)以转到聊天(Chats)
点击屏幕右上角的铅笔图标(pencil icon)
点击秘密(Secret)
选择您要发送消息的人(person)
如果要设置消息的过期(expiration)时间，请点击计时器图标(timer icon)并设置计时器使消息消失
您的秘密对话将变得模糊，底部会出现一条消息（红色），显示过期时间（以秒为单位）
在Facebook Messenger上验证秘密(Secret) 对话(Conversations)
您可以通过比较它们的设备密钥来验证所有加密的秘密对话。您和您的消息收件人(message recipient)都将获得设备密钥，以便您可以比较并查看它们是否匹配。
打开秘密对话并点击联系人的姓名(contact’s name)
点击你的钥匙(Your Keys)
将您的设备密钥(device key)与您的联系人姓名进行比较，以确保它们匹配。
如何删除秘密对话
安卓
打开Messenger应用并点击右上角(right corner)的头像(profile picture)。向下滚动(Scroll)并点击秘密对话(Secret Conversations)。
接下来，点击删除所有秘密对话(Delete All Secret Conversations)
点击删除(Delete)
iOS
打开Messenger，然后点击聊天(Chats)，然后点击左上角的头像。(profile photo)
向下滚动并点击秘密对话(Secret Conversations)。点击删除所有秘密对话(Delete All Secret Conversations)，然后点击删除(Delete)。
如何删除一个秘密对话(How to Delete One Secret Conversation)
如果要删除单个对话，请点击联系人姓名(contact’s name)。将出现主聊天屏幕(chat screen)。再次点击名称（就在(name)Secret Conversation字样下方）
注意：(Note:)您只能从您的设备中删除秘密对话，而不能从您的收件人的设备中删除。
Facebook 秘密对话的缺点是它只为一对一对话而设计，而不是群组。它也不能用于发送付款。
How to Send Self-Destructing Messages in Facebook Messenger
Ever used disappearing ink to write messages to your friends so yоu nevеr have to worry about your secret getting out? That’s what Facebook Messenger’s self-destructing messages do for the texts and photos or vіdеos you send from your device.
Also known as ephemeral messaging, these messages ensure that any content you send is erased within minutes or seconds of consumption. This happens on both devices, plus on the system servers without storing lasting records of the conversation.
Multiple technologies like encryption and strong password walls are used together to send, code, receive and destroy texts, photos or videos and other attachments.
Self-destructing messages are attractive and popular, especially with the younger generation, but, adults use them for their personal privacy. Other positive use cases include whistleblowing, or communicating about sensitive matters like disciplinary or criminal issues.
You can also use them to keep snoops from reading messages they shouldn’t or during emotionally charged moments like spousal arguments when it’s easy to send harsh texts that can be used against you.
Nothing prevents the recipient from taking a screenshot or external copy of your screen while viewing the message though, so there’s no guarantee that the message hasn’t been recorded, but you do get close to 100 percent privacy.
How Facebook Messenger’s Self-Destructing Messages Work
Facebook Messenger app has the Secret Conversations feature that lets you send private messages to one person while protecting your privacy with special encryption.
The encryption is designed to protect the message so only you and your recipient can view or play it – not even Facebook can access it. You can also add a timer or expiration to the message so it can self-destruct within the time you specified after your recipient sees it.
All the secret conversations appear with a padlock icon next to the contact’s profile icon in your message list. The speech bubbles are black in color, not the usual blue for ordinary Facebook chats, and you can start one in a new chat or an existing one.
However, if the person isn’t your Facebook friend or Facebook doesn’t think you know the contact, your secret message will be sent to their Message Requests or appear like spam under Filtered Messages. The messages won’t be deleted but are kept in the hidden mailbox.
Set Up Self-Destructing Messages in Messenger
Secret conversations can only be created in the Messenger app for Android and iOS, so you won’t find them on messenger.com or Facebook chat. They’re also not available in Facebook Messenger Lite app.
Furthermore, you can only access the conversations on the devices you create them from. For example, you can’t start a secret chat on your iPhone and then continue with the chat on your iPad.
However, you can add a different device to send the message, but you won’t see previous messages on it. The other person will be notified about it, but only new messages in existing conversations will appear on all devices.
The process of creating secret conversations varies slightly depending on whether your device is Android or iOS. We’re going to look at the instructions for each individually.
Android
Before sending a secret conversation, make sure you have installed the latest version of the Facebook Messenger app on your phone or tablet. If you don’t see the disappearing conversations option, download the latest version from Google Play Store.
Open Messenger to go to Chats
Tap the pencil icon at the upper right side of the screen
Tap the padlock icon
Select the person you’d like to message
You can tap the timer icon in the text box that appears and set a time or expiration (e.g. 5 seconds, 10 seconds) within which the message disappears once the recipient has consumed it
Your secret conversation will be blurred and a message will appear (in red) at the bottom showing the expiration (in seconds)
iOS (iPhone or iPad)
Open Messenger app to go to Chats
Tap the pencil icon at the top right side of your screen
Tap Secret
Select the person you want to message
If you want to set an expiration for the message, tap the timer icon and set the timer make the messages disappear
Your secret conversation will be blurred and a message will appear (in red) at the bottom showing the expiration (in seconds)
Verifying Secret Conversations on Facebook Messenger
You can verify all encrypted secret conversations by comparing their device keys. Both you and your message recipient will get device keys so you can compare and see if they match.
Open a secret conversation and tap the contact’s name
Tap Your Keys
Compare your device key with that of your contact’s name to ensure they match.
How to Delete Secret Conversations
Android
Open Messenger app and tap your profile picture at the upper right corner. Scroll down and tap Secret Conversations.
Next, tap Delete All Secret Conversations
Tap Delete
iOS
Open Messenger, then tap Chats, and then tap your profile photo at the upper left corner.
Scroll down and tap Secret Conversations. Tap Delete All Secret Conversations and tap Delete.
How to Delete One Secret Conversation
If you want to delete a single conversation, tap on the contact’s name. The main chat screen will appear. Tap on the name again (just under the words Secret Conversation)
Note: You can delete secret conversations only from your device, not from your recipient’s device.
The downside to Facebook’s secret conversations is it’s only designed for one-to-one conversations, not groups. It also can’t be used to send payments.
