Can I use
?

Do Not Track API

- CR

Allows the browser's Do Not Track setting to be queried via navigator.doNotTrack.

IE

  1. 5.5 - 8: Not supported
  2. 9 - 10: Partial support
  3. 11: Partial support

Edge

  1. 12 - 16: Partial support
  2. 17 - 85: Supported
  3. 86: Supported

Firefox

  1. 2 - 8: Not supported
  2. 9 - 31: Partial support
  3. 32 - 80: Supported
  4. 81: Supported
  5. 82 - 83: Supported

Chrome

  1. 4 - 22: Not supported
  2. 23 - 85: Supported
  3. 86: Supported
  4. 87 - 89: Supported

Safari

  1. 3.1 - 5: Not supported
  2. 5.1 - 6: Supported
  3. 6.1 - 9: Partial support
  4. 9.1 - 12: Supported
  5. 12.1 - 13.1: Not supported
  6. 14: Not supported
  7. TP: Not supported

Opera

  1. 9 - 11.6: Not supported
  2. 12 - 70: Supported
  3. 71: Supported

iOS Safari

  1. 3.2 - 6.1: Not supported
  2. 7 - 8.4: Partial support
  3. 9 - 12.1: Supported
  4. 12.2 - 13.7: Not supported
  5. 14: Not supported

Opera Mini

  1. all: Supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 81: Supported

Blackberry Browser

  1. 7: Support unknown
  2. 10: Partial support

Opera Mobile

  1. 10 - 12: Support unknown
  2. 12.1: Supported
  3. 59: Supported

Chrome for Android

  1. 85: Supported

Firefox for Android

  1. 79: Supported

IE Mobile

  1. 10: Partial support
  2. 11: Partial support

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 11.2: Supported
  2. 12.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: Supported

Partial support refers to the doNotTrack field being misnamed, or being attached to an object other than navigator (e.g. window).

Resources:
MDN Web Docs - doNotTrack