A security researcher claims to have discovered a way to hide extra information inside emoji.

Using variation selectors, you can conceal messages of arbitrary length within emoji, or indeed any unicode character. "To be ...

Paul Butler tests and demonstrates the flexibility of encoding hidden messages within Unicode characters, including emoji.

Butler said it is highly unlikely that anyone would be able to use this method to hide malware or malicious code in an emoji.

The concept revolves around Unicode's system of representing text as a sequence of codepoints, with each codepoint being a number assigned meaning by the Unicode Consortium.

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