# Session Keys Session keys allow Dapps to sign transactions on behalf of a user with specific limitations, such as expiry time, token limit, etc. Each zKey login assigns users a session key with an expiry time, allowing them to autonomously sign transactions in a Dapp. This enables an immersive gameplay experience without the need to handle every transaction. Users only need to log in again and obtain new session keys when the session key expires or they lose their keys. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.zkey.org/session-keys.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.