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Documentation Index

Fetch the complete documentation index at: https://docs.authsignal.com/llms.txt

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The Web SDK client exposes an anonymousId property which can be used as the deviceId value when tracking an action. 
const deviceId = authsignal.anonymousId;
This value is persisted as a cookie on the domain where you have initialized the Web SDK client. The name of the cookie is __as_aid. You can pass this value to your server and into a track request using a Server SDK in order to use rules based on device.