Activation lock MacBook to Apple ID? Is it possible to lock my MacBook to my Apple ID so that if it gets stolen (macOS) is useless when someone tries to reinstall it?
New Mac hardware supports activation lock:


https://support.apple.com/en-us/HT208987


To use it, you need:


macOS Catalina
a mac with a T2 chip
activate two-factor authentication for your Apple ID
Make sure Secure Boot is enabled for your mac (it is enabled by default)


How to Activate it:
- turn on Find My Mac

How to check that Activation Lock is on:
- Choose Apple menu  > About this Mac.
- Click System Report.
- Click Activation Lock Status under Hardware. 

Turn off Activation Lock:
Before you send your Mac in for service, sell it, or give it away, you should turn off Activation Lock. 

If you have access to the device, turn off Find My Mac to disable Activation Lock, and then sign out of iCloud:
- Choose Apple menu  > System Preferences.
- Click Apple ID, then click iCloud.
- Turn off Find My Mac.
- Click the Sign Out button. 

If you can't access your Mac and you need to turn off Activation Lock, follow these steps:
- Go to iCloud.com and sign in with your Apple ID. 
- Click Find iPhone.
- Select All Devices, then click your Mac.
- Click Erase Mac. Select Next until the device is erased.
- Click the X next to your Mac.