Geometric Shapes (Unicode block)
Geometric Shapes is a Unicode block of 96 symbols at code point range U+25A0–25FF.

U+25A0–U+25CF
The BLACK CIRCLE is displayed when typing in a password field, in order to hide characters from a screen recorder or shoulder surfing.

U+25D0–U+25FF
The CIRCLE WITH LEFT HALF BLACK is used to represent the contrast ratio of a screen.

Font coverage
Font sets like Code2000 and the DejaVu family include coverage for each of the glyphs in the Geometric Shapes range. Unifont also contains all the glyphs.  Among the fonts in widespread use, full implementation is provided by Segoe UI Symbol and significant partial implementation of this range is provided by Arial Unicode MS and Lucida Sans Unicode, which include coverage for 83% (80 out of 96) and 82% (79 out of 96) of the symbols, respectively.

Block
Emoji
The Geometric Shapes block contains eight emoji:
U+25AA–U+25AB, U+25B6, U+25C0 and U+25FB–U+25FE.The block has sixteen standardized variants defined to specify emoji-style (U+FE0F VS16) or text presentation (U+FE0E VS15) for the
eight emoji.

History
The following Unicode-related documents record the purpose and process of defining specific characters in the Geometric Shapes block:

See also
Unicode symbols
Dingbat
Box Drawing (Unicode block)
Block Elements (Unicode block)
Box-drawing character
Tombstone (typography), the end of proof character
Geometric Shapes Extended (Unicode block)
Miscellaneous Symbols and Arrows (Unicode block) includes more geometric shapes
Miscellaneous Symbols and Pictographs (Unicode block) includes several geometric shapes of different colors
Mathematical operators and symbols in Unicode


== References ==