# Account Data Storage
Account data storage is a key-value storage associated with an account.
The key of each entry is a unique string.
The value is the data of one of the types:
- array of bytes
The size of an account data storage is unlimited. For key and value size limitations, see the Data Transaction article.
# View Account Data
Data storage of any account, as well as other blockchain data, are public and can be read by anyone. For example, you can see data entries in Waves Explorer (opens new window). To do this, find an account by its address or alias and switch to the Data tab.
# Add, Modify, Delete Entries
The account owner can add, modify or delete entries of the account data storage via a Data transaction. You can create and send a transaction using one of the client libraries, see examples in the How to Create Transaction and Send It to Blockchain article.