Explanation:

- Google (Option 1): Google developed a Braille keyboard integrated into the TalkBack screen reader app for Android. This allows visually impaired users to type braille directly on their phones.

- Correct Answer

- Apple (Option 2): Apple has accessibility features in its devices, but it hasn't specifically developed a standalone braille keyboard.

- Microsoft (Option 3): Microsoft has various accessibility technologies, but it hasn't launched a specific braille keyboard like TalkBack.

- Huawei (Option 4): Huawei focuses on a wide range of technology, but there's no major note of them developing a braille keyboard like TalkBack.