By chaining the selectors together, he was able to encode invisible messages inside an emoji (or any other Unicode character) ...

Layering an emoji can also be done several times ... rice will draw out more moisture As with layering emojis, sending an invisible text message can be done in just a few steps, but also can ...

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