Can I use
?

EOT - Embedded OpenType fonts

- UNOFF

Type of font that can be derived from a regular font, allowing small files and legal use of high-quality fonts. Usage is restricted by the file being tied to the website

Chrome

  1. 4 - 123: Not supported
  2. 124: Not supported
  3. 125 - 127: Not supported

Edge

  1. 12 - 122: Not supported
  2. 123: Not supported

Safari

  1. 3.1 - 17.3: Not supported
  2. 17.4: Not supported
  3. 17.5 - TP: Not supported

Firefox

  1. 2 - 124: Not supported
  2. 125: Not supported
  3. 126 - 128: Not supported

Opera

  1. 9 - 108: Not supported
  2. 109: Not supported

IE

  1. 5.5: Not supported
  2. 6 - 10: Supported
  3. 11: Supported

Chrome for Android

  1. 123: Not supported

Safari on iOS

  1. 3.2 - 17.3: Not supported
  2. 17.4: Not supported
  3. 17.5: Not supported

Samsung Internet

  1. 4 - 23: Not supported
  2. 24: Not supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 80: Not supported

UC Browser for Android

  1. 15.5: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 123: Not supported

Firefox for Android

  1. 124: Not supported

QQ Browser

  1. 14.9: Not supported

Baidu Browser

  1. 13.52: Not supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported

Proposal by Microsoft, being considered for W3C standardization.

Resources:
Wikipedia
Example pages