How to Set Up Touch ID on a Mac

Touch ID lets you use your fingerprint to unlock a compatible Mac, approve Apple Pay purchases, fill in saved passwords, and authorize certain system actions. To set it up, open Apple menu > System Settings > Touch ID & Password, select Add Fingerprint, and follow the onscreen instructions.

Quick Answer

To add a fingerprint to your Mac:

Choose Apple menu > System Settings.
Select Touch ID & Password in the sidebar.
Click Add Fingerprint.
Enter your Mac login password when prompted.
Repeatedly place and lift your finger on the Touch ID sensor until enrollment is complete.
Choose which Touch ID features you want to use, such as unlocking your Mac, Apple Pay, or password autofill.

Touch ID is available only on Macs with a built-in Touch ID sensor or a compatible Apple keyboard with Touch ID.

Which Macs and Keyboards Support Touch ID?

Touch ID is built into many MacBook models. On a MacBook, the sensor is usually the power button in the upper-right corner of the keyboard. It may have a Touch ID symbol or a slightly different finish from the other keys.

Some desktop Macs can use Touch ID through a compatible Apple keyboard with Touch ID. This setup generally requires:

A Mac that supports the keyboard
A compatible Apple keyboard with Touch ID
A secure connection between the keyboard and Mac, typically established by pairing it with a cable before using it wirelessly

If you do not see Touch ID & Password in System Settings, your Mac or connected keyboard may not support Touch ID, or the keyboard may not be connected correctly.

Touch ID is different from Face ID. Macs use a fingerprint sensor rather than a camera-based facial recognition system.

How to Add a Fingerprint on a Mac

You can enroll multiple fingerprints so you can use different fingers or allow another person to unlock the Mac, if you are comfortable giving that person access to your account.

Before starting, make sure your finger and the Touch ID sensor are clean and dry. Moisture, lotions, cuts, or dirt can interfere with fingerprint recognition.

Select Apple menu > System Settings.
Click Touch ID & Password in the sidebar. Depending on your Mac, you may need to scroll down to find it.
Click Add Fingerprint.
Enter your Mac login password if macOS asks for it.
Place your finger on the Touch ID sensor without pressing too hard.
Lift and reposition your finger several times as instructed.
Continue until macOS confirms that the fingerprint has been added.
Type a name for the fingerprint if you want to identify it more easily.
Click Done.

Use the same finger during enrollment, but change its position slightly each time. Include the edges and tip of the finger so Touch ID can recognize it from different angles.

How Many Fingerprints Can You Add?

The number of fingerprints you can store may depend on the Mac model and system configuration. If Add Fingerprint is unavailable or macOS will not let you add another fingerprint, remove one you no longer need and try again.

Add the Same Finger More Than Once

If Touch ID often fails to recognize a particular finger, you can try adding that finger again as a separate entry. Register it from slightly different angles and with the finger in the condition you normally use it.

This may help if your finger position changes frequently, but it uses another fingerprint slot.

How to Remove a Fingerprint

Removing a fingerprint prevents that stored fingerprint from being used for Touch ID authentication on your account.

Open Apple menu > System Settings.
Select Touch ID & Password.
Locate the fingerprint you want to remove.
Click the fingerprint entry.
Enter your Mac login password if prompted.
Click Delete Fingerprint.

Removing a fingerprint does not delete your Mac account, files, or password. It only removes that fingerprint from Touch ID.

If you are removing every fingerprint, you may also want to turn off the Touch ID features listed in the same settings panel.

Choose What Touch ID Can Do

The Touch ID & Password settings include options that control how Touch ID works. Available options can vary by Mac model, connected keyboard, account, and system configuration.

Common options include:

Unlocking your Mac — Use a registered fingerprint instead of typing your password when waking or unlocking the Mac.
Apple Pay — Approve Apple Pay payments with Touch ID.
iTunes Store, App Store, and Apple Books — Authorize purchases and downloads.
Password AutoFill — Use Touch ID to approve access to saved passwords and other protected information.
Fast User Switching — Use Touch ID when switching between supported user accounts.
System Settings — Authorize certain changes without repeatedly entering your password.

To enable or disable a feature:

Open Apple menu > System Settings.
Select Touch ID & Password.
Turn the relevant option on or off.

Disabling an option changes how macOS requests authorization. It does not remove your fingerprints.

How to Unlock a Mac With Touch ID

After adding a fingerprint and enabling Mac unlocking:

Wake the Mac or open the display.
Place a registered finger on the Touch ID sensor.
Keep your finger there briefly until the Mac unlocks.

You can also use Touch ID after the Mac wakes from sleep. Make sure your finger covers the sensor completely and rests flat against it.

Touch ID normally works only for the user account whose fingerprint was enrolled. If another person needs to use the Mac, they should sign in to their own account or enter the appropriate account password.

When macOS Requires Your Password Instead

Touch ID is convenient, but it does not replace your Mac login password. macOS may require the password in situations such as:

After restarting or shutting down the Mac
After logging out
After changing security settings
After adding or removing fingerprints
When Touch ID has not been used for a period of time
After several unsuccessful fingerprint attempts
When macOS requires stronger authentication for a protected action

This behavior is a security feature. If the password prompt appears, enter the password for the Mac user account associated with the Touch ID fingerprint.

You should know your password even if Touch ID usually works. A fingerprint cannot be changed if it is exposed, while a password can be replaced.

Use Touch ID With Apple Pay

On a supported Mac, Touch ID can authorize Apple Pay purchases made in Safari and other supported apps.

To set up Apple Pay:

Open Apple menu > System Settings.
Select Wallet & Apple Pay.
Follow the onscreen instructions to add a supported card.
Return to Touch ID & Password and make sure the Apple Pay option is enabled, if it appears.

During checkout, choose Apple Pay and follow the prompts. Touch ID may ask you to place your registered finger on the sensor.

Apple Pay availability depends on your region, card issuer, account, merchant, and device. If the option is missing, check that your Mac and payment card support Apple Pay and that you are signed in as required.

Use Touch ID for Passwords and Purchases

Touch ID can protect access to saved passwords and other sensitive information stored by macOS. For example, macOS may request Touch ID before showing a saved password or filling it into a website.

It can also authorize purchases through supported Apple services when the related option is enabled in Touch ID & Password.

Touch ID does not reveal your fingerprint to websites or apps. It confirms your identity locally so the Mac can approve an action. An app may still request your Mac password instead, depending on the action and its security requirements.

Touch ID Security Limits

Touch ID improves convenience, but it is not a replacement for your Mac password in every situation.

Keep these limitations in mind:

Anyone who knows your Mac login password may be able to add their own fingerprint to your user account.
A registered fingerprint may unlock your account, so do not add another person’s fingerprint unless you trust that person with access to your files and account.
Touch ID cannot identify whether a finger belongs to the account owner beyond the enrolled fingerprint.
A fingerprint is not a secret in the same way a password is. Treat access to your Mac and enrolled fingerprints seriously.
macOS can require the password instead of Touch ID after a restart, logout, security change, or failed authentication attempts.
Touch ID does not automatically protect your Mac if you leave it unlocked. Lock the Mac when you walk away.

To lock the Mac manually, choose Apple menu > Lock Screen, or press Control-Command-Q. You can then use Touch ID or your password to unlock it, depending on what macOS requests.

Troubleshooting Touch ID on a Mac

Touch ID Is Missing From System Settings

If Touch ID & Password does not appear:

Confirm that your Mac model has a Touch ID sensor.
If you are using a desktop Mac, verify that the Apple keyboard supports Touch ID.
Connect the keyboard to the Mac and make sure it is powered on.
Open Apple menu > System Settings again.
Restart the Mac if the setting still does not appear.

If the Mac has no built-in sensor and the keyboard does not have Touch ID, software settings cannot add the feature.

Touch ID Does Not Recognize Your Finger

Try the following:

Clean and dry the Touch ID sensor with a soft, lint-free cloth.
Clean and dry your finger.
Place the finger flat on the sensor rather than touching it with only the tip.
Keep your finger still briefly.
Try a different registered finger.
Open Touch ID & Password and add the fingerprint again.

Avoid enrolling a finger when it is unusually wet, dry, dirty, or covered with a substance that changes its surface.

Touch ID Works Sometimes but Not Consistently

Inconsistent recognition can result from changing finger conditions or from enrolling only a small part of the finger.

Remove the unreliable fingerprint and add it again. During setup, reposition the finger to capture its center, edges, and tip. You can also register another finger for an alternative way to authenticate.

Touch ID Stops Working After a Restart

This is expected in many security situations. After the Mac restarts or shuts down, macOS may require the account password before Touch ID can be used again.

Enter the password once, then try Touch ID again.

Touch ID Does Not Unlock the Mac

Check that:

The fingerprint is still listed in Touch ID & Password.
Unlocking your Mac is enabled.
You are using the correct finger.
You are signing in to the account where the fingerprint was enrolled.
The Mac has already been authenticated with the account password after a restart or other security event.

If necessary, remove and re-add the fingerprint.

Apple Pay Does Not Work With Touch ID

Make sure:

A payment card is set up in Wallet & Apple Pay.
The card is supported by your bank and region.
Apple Pay is enabled in Touch ID & Password, when that option is available.
You are using a registered fingerprint.
The merchant and website support Apple Pay.

If the card is declined, Touch ID may be working correctly while the card issuer or merchant is rejecting the transaction.

A Touch ID Keyboard Is Not Recognized

For a desktop Mac with an Apple keyboard that includes Touch ID:

Turn on the keyboard.
Connect it to the Mac with a compatible cable.
Wait for macOS to recognize and pair it.
Open System Settings and confirm that the keyboard appears under Keyboard.
Check whether Touch ID & Password is now available.

If the keyboard works for typing but Touch ID is unavailable, verify that the keyboard model supports Touch ID and that it is connected to the intended Mac.

When to Contact Apple Support

Contact Apple Support or an Apple Authorized Service Provider if:

The sensor is physically damaged.
Touch ID remains unavailable after restarting and reconnecting a compatible keyboard.
No enrolled fingerprint works even after repeated setup attempts.
macOS displays a hardware-related error.
You cannot change Touch ID settings because of an account or device-management restriction.

Frequently Asked Questions

Can I use Touch ID without a Mac password?

No. You must create and retain a Mac login password. Touch ID supplements the password; it does not replace it completely.

Can I add another person’s fingerprint?

Yes, if macOS allows another fingerprint to be added to your user account. However, that fingerprint may let the person unlock your Mac and authorize actions available to your account. Add another person’s fingerprint only if you trust them with that access.

A separate macOS user account is usually safer when two people need access to the same Mac.

Does adding a fingerprint give someone access to all Mac accounts?

No. A fingerprint is associated with the user account where it was enrolled. It does not automatically sign the person in to every account on the Mac.

Can Touch ID unlock a Mac after it restarts?

macOS may require the account password after a restart or shutdown before Touch ID becomes available again. This is normal security behavior.

Can I use Touch ID with an external monitor?

The monitor does not provide Touch ID. Touch ID must come from the Mac itself or from a compatible Apple keyboard with Touch ID.

What happens if Touch ID fails too many times?

macOS can require your account password after unsuccessful attempts. Enter the password, then try Touch ID again.

Can I use Touch ID for every password prompt?

No. Touch ID supports many system and app actions, but some prompts require the password or another form of authentication.

Is Touch ID available on every MacBook?

No. Only Mac models with a Touch ID sensor support it. If Touch ID & Password is missing, check your Mac model and hardware.

Final Thoughts

Setting up Touch ID on a Mac takes only a few minutes: open Touch ID & Password, add a fingerprint, and select the actions you want to approve with it. Register more than one finger if useful, keep your Mac password available, and remember that macOS will sometimes require the password for security reasons.