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This emoji is a key and is often used to represent unlocking something, such as a door, or a secret. It can also be used to symbolize access or ownership. Read more
This emoji is fairly popular, and is used by people of all ages. It is most commonly used on Twitter, Instagram, and Facebook. This emoji is not considered rude, as it is generally used in a positive or neutral context.
The history of this emoji dates back to 2010, when it was added to the Unicode Standard. It was included as part of Unicode 6.0, and was intended to represent a key or a lock. Since then, it has become widely used on social media platforms to represent unlocking something, or gaining access to something.