Crypto, short for cryptocurrency, is a digital or virtual currency that uses cryptography for secure financial transactions. It is decentralized and operates independently of a central bank or other financial institution, and is not backed by a physical commodity or government. Crypto coins are based on blockchain technology and can be used to buy goods and services online or traded on exchanges for traditional currencies or other cryptocurrencies. There are many different crypto coins available, including Bitcoin, Ethereum, and Litecoin. The value of crypto coins is highly volatile and subject to many factors.