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You can use many different symbols and special characters. However, only 17 characters can be read by most screen readers. The list of symbols and special characters that can be read are as follows.
The AT Symbol.
Ampersand.
Slash
Copyright
Registered
Trademark
Paragraph
US Dollar
Euro
British Pound
Japanese Yen
Percent
Bullet
Degrees
One Half
One Fourth
Three Fourths
If you use other symbols or special characters, they must always be shown in regular text as well. This must be done so the screen readers will read the symbol properly to the reader.
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