亿万富翁埃隆·马斯克（ Elon Musk）的一条推文——^{(Elon Musk –)} “使用信号^{(Use Signal)}”是让全世界做出决定的全部。Elon 的推文是在WhatsApp在应用程序更新后公布其隐私政策的更改之后发布的。这些变化让公众觉得他们的隐私受到威胁，因此他在推特上写道：“使用信号^(Signal)”。今天，我将向您解释如何在Signal上启用屏幕锁定以及更改应用程序的安全PIN。

Signal 消息传递应用程序^{(Signal messaging app)}是一种开源的非营利性消息传递服务。除了标准的文本和彩信，您还可以在此应用程序上进行音频和视频通话。在这个应用程序上发送的所有消息从一开始就被加密，密钥存储在通信器端。用户可以将Signal设置为他们的默认短信应用程序，如果他们希望在 5 秒到一周之间的任何时间后删除他们的消息，还可以为他们的消息设置计时器。

如何在 Signal 上启用屏幕锁定

大多数应用程序要求其用户下载外部应用程序锁（如果需要），但不是Signal。它有一个内置的屏幕锁定^{(Screen Lock)}，使用手机的密码或用户可能设置的任何生物特征验证；例如指纹或虹膜扫描。

• 该过程的第一步是在手机上设置某种屏幕锁定。Signal 的桌面版本尚未提供该功能。
• 确保上述内容后，在手机上打开Signal并转到设置（在屏幕左上角）。

• 单击^(Click)列表中的第三个选项“隐私”。
• 打开“屏幕锁定”设置。

您现在已在Signal应用程序上启用屏幕锁定。您还可以为此屏幕锁定设置超时，或通过拉下通知托盘并点击“锁定^(Lock)信号”手动锁定^(Signal)Signal。

阅读^(Read)：信号应用提示和技巧^{(Signal app Tips and Tricks)}。

如何更改 Signal 上的 PIN

在大多数即时通讯应用程序中，转移到新设备或不同的服务器可能会导致联系人、消息等丢失。信号应用程序带有PIN 码^(PIN)，允许用户恢复他们的联系人和设置。用户应记住，此PIN未与Signal上的聊天备份链接，因此无能为力。PIN设置也单独存储在用户端，如果丢失，Signal无法^(Signal)帮助找回。您还可以使用您的PIN作为注册锁，以限制其他人以他们的名义注册您的号码。

以下^(Below)是更改信号^(Signal)PIN 的方法：

• 前往左上角的设置。
• 向下滚动^(Scroll)直到您到达“更改^(Change)您的PIN 码^(PIN)”。

• 单击它并输入您的 PIN。

您可以选择为您的设备设置数字或字母数字PIN。由于Signal不会记录您的PIN 码^(PIN)，它会提醒您定期重新输入您的PIN 码。^(PIN)这是他们帮助你记住它的机制。

这些提醒以 12 小时、1 天、一周等间隔出现。用户设置的PIN^(PINs)没有字符限制，但建议不要保留太久，因为如果丢失一次，您可能会保持登录状态离开您的帐户很长一段时间。

我希望这篇文章能够解决您对 Signal 隐私设置的疑问。

How to enable Screen Lock and Change PIN on Signal

A tweet from billionaire Elon Musk – “Use Signal,” was all it took to make the whole world take a decision. Elon’s tweet came after WhatsApp had publicized the changes to its privacy policy after the app’s update. These changes made the public feel like their privacy was at risk, and thus he tweeted, “Use Signal”. Today, I will be explaining to you how you can enable a screen lock on Signal and also change the security PIN for the app.

Signal messaging app is an Open-Source not-for-profit messaging service. Apart from the standard texts and multimedia messages, one can also make audio and video calls on this app. All the messages sent on this app are encrypted from the get-go, with the keys stored at the communicators’ end. Users can set Signal as their default texting app, and can also set timers to their messages if they want their messages to be deleted after any time between 5 seconds and a week.

How to enable Screen Lock on Signal

Most apps require their users to download an external app lock, if need be, but not Signal. It has an in-built Screen Lock that uses the phone’s pin code or any biometric authentication that the user may have set up; a fingerprint or an iris scan for example.

• The first step in the process is to have a screen lock of some sort on your phone. The functionality hasn’t yet been made available on Signal’s desktop version.
• After ensuring the above, open Signal on your phone and head over to setting (on the top left corner on the screen).

• Click on ‘Privacy,’ the third option in the list.
• Turn ‘Screen Lock’ setting on.

You have now enabled a screen lock on your Signal app. You can also set a timeout for this screen lock, or manually lock Signal up by pulling the notification tray down and tapping on ‘Lock Signal.’

Read: Signal app Tips and Tricks.

How to Change the PIN on Signal

In most messenger apps, shifting to a new device or a different server can lead to a loss of contacts, messages, etc. The signal app sports a PIN, which allows users to restore their contacts and settings. Users should keep in mind that this PIN isn’t linked with the chat backup on Signal, and thus can’t help with the same. The PIN setting is also solely stored on the user’s end, and if lost, Signal can’t help in retrieving it. You can also use your PIN as a registration lock, to restrict someone else from registering your number under their name.

Below is how you can change your Signal PIN:

• Head over to Settings on the top left corner.
• Scroll down till you reach ‘Change your PIN’.

• Click on it and type in your PIN.

You can choose to set a numeric or an alphanumeric PIN for your device. Since Signal doesn’t keep a record of your PIN, it has a reminder wherein you have to re-enter your PIN at periodic intervals. This is their mechanism of helping you remember it.

These reminders arise in the intervals of 12 hours, 1 day, a week, etc. There is no character limit to the PINs set by users, though it is advisable to not keep it too long, since if lost once, you may stay logged out of your account for quite some time.

I hope this post was able to solve your queries about Signal’s privacy settings.

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