It's also used to represent a 'connection' or 'relationship' between people. You can use this emoji when teamwork is important or to express the strong bond of friendship between two people.

Recently, it has often emerged as an icon for 'blockchain' technology, as it intuitively illustrates the concept of data being linked like a chain, making it hard to counterfeit. It's a key emoji representing all types of 'connections,' from technology and relationships to information.