Apple在Mac上实施的(Mac)Touch ID改变了游戏规则，但功能并非没有问题。许多原因（例如与软件相关的故障和未正确配置的Touch ID设置）都可能导致Touch ID在(Touch ID)Mac上无法正常工作。
如果Touch ID无法解锁Mac、无法验证Apple Pay或无法注册您的指纹以进行其他操作，以下修复应该可以帮助您。
检查您的 Touch ID 设置
最好通过检查 Mac 的Touch ID设置来开始。通常(Often)，一组不正确配置的首选项可能会导致Touch ID无法正常工作。
首先打开Apple菜单。然后，选择系统偏好设置(System Preferences)> Touch ID以查看您的Touch ID设置。确保(Make)将触控 ID 用于：(Use Touch ID for:)下的选项反映了您希望触控 ID 在Mac上的工作方式。
例如，如果您在使用Touch ID自动填充密码时遇到问题，请选中(Touch ID)Password AutoFill旁边的框。但是，如果一切正常，请继续进行下一个修复。
重新启动你的 Mac
如果Touch ID刚才没有问题，请尝试重新启动您的Mac。这应该会迅速消除阻止指纹传感器启动的任何故障。
打开Apple菜单，选择重新启动(Restart)，然后在重新选择重新启动之前取消选中重新(Restart)登录时重新打开窗口(Reopen windows when logging back in)旁边的框。
清洁 Touch ID 传感器
当您继续使用Touch ID时，手指上的湿气、汗水和油脂会弄乱MacBook或妙控键盘(Magic Keyboard)上的指纹传感器。这是Touch ID(Touch ID)无法在Mac上运行的主要原因。尝试用柔软的无绒布擦拭指纹传感器，然后重试。
此外，最好避免用湿手指使用Touch ID 。相反，在与传感器接触之前将它们擦干。
关闭并重新打开妙控键盘
如果您在Mac上使用带触控 ID的(Touch ID)妙控键盘(Magic Keyboard)，请尝试关闭设备。然后，通过其闪电(Lightning)转USB-C电缆连接设备并重新打开它。您可以在妙控键盘(Magic Keyboard)的最右侧找到ON/OFF开关。
如果Touch ID开始注册，您可以移除Lightning线缆并再次以无线方式使用您的妙控键盘(Magic Keyboard)。
检查您的 Mac 的兼容性
如果触控 ID在您刚刚与新(Touch ID)Mac配对的带有触控 ID的(Touch ID)妙控键盘(Magic Keyboard)上不起作用，则必须检查兼容性。只有运行 Apple Silicon 芯片组(Macs running Apple Silicon chipsets)且安装了 macOS Big Sur 11.4或更高版本的 Mac 才支持Touch ID。
打开Apple菜单并选择About This Mac以检查芯片组和系统软件版本。
如果您看到列出的 macOS 的旧版本，请尝试更新您的Mac（查看下一部分）。但是，如果您的Mac使用Intel芯片组，请忘记使用Touch ID。
更新 Mac 的系统软件
更新 macOS 可以修复Mac(Mac)上触控 ID(Touch ID)的任何已知问题。为此，请打开Apple菜单并选择About This Mac。然后，选择软件更新(Software Update )>立即更新(Update Now)以应用最新的系统软件更新。
较新(Newer)版本的 macOS 还可以分解关键功能，例如Touch ID。如果问题是在升级到 macOS 12 Monterey之后立即发生的，那么您最好的选择是在后续更新可用时立即安装它们。确保(Make)选中“软件更新”窗格中(Software Update)自动使我的 Mac 保持最新(Automatically keep my Mac up to date)旁边的框，以确保自动发生。
将您的 Mac 启动到安全模式
将 Mac 引导至安全模式(Booting your Mac into Safe Mode)有助于解决由内核缓存或其他底层系统相关组件引起的问题。
基于英特尔的 Mac(Intel-Based Mac)
关闭你的Mac。然后，重新打开它，但继续按住Shift 键(Shift)，直到出现登录屏幕。
苹果硅 Mac(Apple Silicon Macs)
关闭你的Mac。然后，在按住电源(Power)按钮的同时重新打开它，直到看到“启动选项(Startup Options)”屏幕。然后，选择启动盘（Macintosh HD），按住Shift，然后选择Continue in Safe Mode。
将Mac启动到安全模式(Safe Mode)后，正常重启Mac。如果您仍然遇到同样的问题，请彻底清理 Mac 的缓存(perform a complete cleanup of your Mac’s cache)。
删除并重新添加您的指纹
删除并重新添加指纹是让Touch ID再次正常工作的另一种方法。为此，请打开Apple菜单并转到System Preferences > Touch ID。然后，将光标悬停在指纹上并选择删除(Remove)符号。
如果出现提示，请输入您的帐户密码并选择确定(OK)以删除指纹。然后，重复屏幕内的任何其他指纹。
移除所有指纹后，重新启动Mac并重新进入Touch ID面板。然后，重复使用“添加指纹(Add Fingerprint)”选项重新添加您的指纹。
重置 Mac 的 NVRAM 和 SMC
如果您使用基于 Intel 的Mac ， NVRAM（非易失性随机存取存储器）中过时的缓存数据可能会导致Touch ID出现问题。但是，您可以通过关闭Mac并在计算机启动时按住Command + Option + P + R键来重置它，直到您看到两次Apple标志。
如果失败，请通过重置 Mac 的 SMC（系统管理控制器）(resetting the Mac’s SMC (System Management Controller))继续。但是，同样，这仅适用于基于 Intel 的Mac(Macs)。
参观苹果
通过遵循上述解决方案和建议，Mac上与(Mac)Touch ID相关的问题很可能很快得到解决。如果不是，则Touch ID传感器本身的硬件可能有问题。因此，请花点时间在最近的Apple Store 零售店(Apple Store)预约，让Apple Genius 专家(Apple Genius)为您检查MacBook或妙控键盘(Magic Keyboard)。
How To Fix Touch ID Not Working on Mac
Apple’s implementation of Touch ID on the Mac haѕ been a game-changer, but the functionality isn’t without issuеs. Many reasons—such as software-related glitcheѕ and incorrectlу configured Touch ID settings—can result in Touch ID not working on Mac.
If Touch ID fails to unlock the Mac, has trouble authenticating Apple Pay, or fails to register your fingerprints for other actions, the following fixes should help you out.
Check Your Touch ID Settings
It’s best to kick things off by checking your Mac’s Touch ID settings. Often, an incorrectly configured set of preferences can give off the appearance of Touch ID not working correctly.
Start by opening the Apple menu. Then, select System Preferences > Touch ID to view your Touch ID settings. Make sure that the options under Use Touch ID for: reflect how you want Touch ID to work on your Mac.
For example, if you have trouble using Touch ID for password auto-filling, check the box next to Password AutoFill. However, if everything looks OK, move on to the next fix.
Restart Your Mac
If Touch ID worked without issues just a moment ago, try restarting your Mac. That should quickly eliminate any glitches preventing the fingerprint sensor from kicking into action.
Open the Apple menu, select Restart, and leave the box next to Reopen windows when logging back in unchecked before selecting Restart again.
Clean the Touch ID Sensor
As you keep using Touch ID, moisture, sweat, and oil from your fingers can mess up the fingerprint sensor on the MacBook or Magic Keyboard. That’s a major reason for Touch ID not to work on your Mac. Try wiping the fingerprint sensor with a soft lint-free cloth and try again.
Also, it’s a good idea to avoid using Touch ID with wet fingers. Instead, dry them off before making contact with the sensor.
Turn Magic Keyboard Off and Back On
If you use a Magic Keyboard with Touch ID on your Mac, try switching the device off. Then, connect the device via its Lightning to USB-C cable and turn it back on. You can find the ON/OFF switch at the right-most edge of the Magic Keyboard.
If Touch ID begins to register, you can remove the Lightning cable and wirelessly use your Magic Keyboard again.
Check Your Mac for Compatibility
If Touch ID doesn’t work on a Magic Keyboard with Touch ID that you just paired to a new Mac, you must check for compatibility. Only Macs running Apple Silicon chipsets with macOS Big Sur 11.4 or later installed support Touch ID.
Open the Apple menu and select About This Mac to check the chipset and system software version.
If you see an older version of macOS listed, try updating your Mac (check the next section). However, if your Mac uses an Intel chipset, forget using Touch ID.
Update the Mac’s System Software
Updating macOS can fix any known issues with Touch ID on your Mac. To do that, open the Apple menu and select About This Mac. Then, select Software Update > Update Now to apply the latest system software updates.
Newer versions of macOS can also break down key functionalities such as Touch ID. If the issue occurred right after upgrading to, say, macOS 12 Monterey, your best option is to install any subsequent updates as soon as they become available. Make sure to check the box next to Automatically keep my Mac up to date within the Software Update pane to ensure that happens automatically.
Boot Your Mac Into Safe Mode
Booting your Mac into Safe Mode helps resolve issues caused by the kernel cache or other underlying system-related components.
Intel-Based Mac
Turn off your Mac. Then, turn it back on but keep holding down the Shift until the login screen shows up.
Apple Silicon Macs
Turn off your Mac. Then, turn it back on while holding down the Power button until you see the Startup Options screen. Then, select the startup disk (Macintosh HD), press and hold Shift, and select Continue in Safe Mode.
After booting your Mac into Safe Mode, reboot your Mac normally. If you still keep running into the same issue, perform a complete cleanup of your Mac’s cache.
Remove and Re-add Your Fingerprints
Removing and re-adding your fingerprints is another way to get Touch ID working correctly again. To do that, open the Apple menu and go to System Preferences > Touch ID. Then, hover the cursor over a fingerprint and select the Remove symbol.
If prompted, enter your account password and select OK to remove the fingerprint. Then, repeat for any other fingerprints within the screen.
After you’ve finished removing all fingerprints, restart your Mac and re-enter the Touch ID pane. Then, use the Add Fingerprint option repeatedly to re-add your fingerprints.
Reset the Mac’s NVRAM and SMC
If you use an Intel-based Mac, obsolete cached data within the NVRAM (non-volatile random-access memory) can create issues with Touch ID. However, you can reset it by shutting down your Mac and pressing and holding the Command + Option + P + R keys at computer startup until you see the Apple logo twice.
If that fails, continue by resetting the Mac’s SMC (System Management Controller). But, again, that applies to Intel-based Macs only.
Take a Visit to Apple
In most likelihood, Touch ID-related issues on the Mac can quickly be taken care of by following the solutions and suggestions above. If not, something’s likely wrong with the hardware on the Touch ID sensor itself. So take the time to book an appointment at the nearest Apple Store and get your MacBook or Magic Keyboard looked at by an Apple Genius.
