Cryptocurrency is a type of digital or virtual currency that uses cryptography for security. It is decentralized and typically operates independently of a central authority, such as a government or financial institution.

One of the key features of cryptocurrencies is their use of a technology called blockchain, which is a distributed ledger that records all transactions across a network of computers. This makes it difficult for any single entity to control or manipulate the currency.

Cryptocurrencies can be used for various purposes, such as online purchases, investment, or remittances. They are typically stored in digital wallets and can be sent or received through digital channels.

Some popular cryptocurrencies include Bitcoin, Ethereum, and Litecoin, but there are thousands of others in existence. The value of these digital assets can be highly volatile, with prices often fluctuating significantly in a short period of time.

Overall, cryptocurrencies offer a new and innovative way to conduct financial transactions, providing users with greater privacy, security, and control over their money.