An Account represents any entity participanting in the IoTeX network, that can be a user, a device, an enterprise, or even a piece of software that lives on the blockchain itself (a so called smart contract). Each IoTeX account always has a "public key" and a "Private key" associated with it. The public key can be represented as a human-readable string of 41 characters by
io1..., that is referred to as the Address of the account.
A typical address in the IoTeX blockchain looks like this:
Similarly to other smart contract platforms, in IoTeX we have two type of accounts: owned accounts that have a known private key associated with them (typically owned by people, enterprises or IoT devices that initiate actions from those accounts), and smart contract accounts that do not have a known private key associated with them, hence they cannot initiate actions.