All languages that use it also use its dotless counterpart I, but not the basic Latin letter I.

The dotted I is encoded into Unicode with the code point U+0130 (U+0069 for the lowercase letter) as part of the Latin Extended-A block.

[1] The dotted and dotless I characters have caused issues in computing.

Languages like Turkish have four variants of the letter I (opposed to two in English).

[2] Both the dotted and dotless I can be used in transcriptions of Rusyn to allow distinguishing between the letters Ы and И, which would otherwise be both transcribed as "y", despite representing different phonemes.