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

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

Kai Havertz's absence will be a massive blow to Arsenal, who were already lacking forward players after losing Bukayo Saka ...

Once reserved for romantic partners and other loved ones, the heart emoji can now mean anything—which means it has no meaning ...