Client-Side Data Storage Explained

How Experiences store data on user devices across Web and Native platforms

Monterosa Experiences store data on a user’s device to enhance performance, maintain state, and deliver a seamless UX across multiple sessions. Whether it’s remembering user preferences, caching content to improve launch performance, or enabling smooth interactions across sessions, client-side storage plays a crucial role.

Whether an Experience is running as a standalone web application or embedded within a customer’s website or native app, it persists data locally on the user’s device exclusively through the web browser's storage. Specifically, localStorage.

Data stored by Monterosa / Interaction SDK

This table details the data items stored by Monterosa / Interaction SDK. It is used by most of the Expereinces and integrations. Please check with your account manager if you are unsure whether it applies to your deployment.

Item name	Item description	Sample value
monterosa_sdk_device_id	Used to uniquely identify the user's device. Generated in core kit and used by identify kit to pass to Identify along with other parameters.	582b85ef-9273-490e-ae53-6f55acf76d6c
client_id	Stores the client_id returned by Identify service.	2f7149b1-b695-45cd-9cec-75fdce9551f9
enmasse_session_id	Enmasse server user session identifier. This value is stored indefinitely for the domain and is used to restore the Enmasse session for returning users. It also enables accurate user statistics to be provided in the Studio.	277ae16d-f967-4858-a689-82051d448776

Data stored by Monterosa / FanKit

This table details the data items stored by Monterosa / FanKit. It is used by most of the Expereinces and integrations. Please check with your account manager if you are unsure whether it applies to your deployment.

Item name	Item description	Sample value
fankit2_elements.currentElementIndexToEvent	Index of last element rendered	{}
fankit2_scorepredictor	Specific element storage structure	{}
fankit2_user	Details of the user's interactions with the experience	{"isFirstVisited":true,"d1f40e6c-238e-435a-b73b-51da40e8d691":{"publicId":"7f5f3614-89d1-423b-9323-7c376403caa0","sessionId":"f8b99091-0846-4855-b3d3-90fed426699f","isUsernamePromptSkiped":false}}
fankit2_elements.votes	Storing historic element votes	{}
fankit2_freestyletrivia	Specific element storage struct	{}
fankit2_dataCapture	To determine what state of data capture form to show	{"isFirstVisited":null}
fankit2_init-time	Time the experience was initialised	{"d1f40e6c-238e-435a-b73b-51da40e8d691":1633693435185}
fankit2_lvisID.info	User profile data	{"deviceId":"5d9e3e5f-0a58-4106-8c26-ccc9f407b959","timeStamp":1690559370,"signature":"62EF90A6699DF8E8AB76DC1C376149D0DF529743","externalId":"898416bc-a740-4844-a2fd-225b1579de3c","userId":"a7d255ac-13aa-4c23-9c92-fb02822a9198","signUp":1690539620,"accessToken":"fiatDfBc3IdwlPjF9zqIxNClsrnUhDKDl1HoJ12aUIy1GAmg","newUser":false}
lvis-<user_id>-frame-<element_id>	Created after user has interacted with a poll or other interactive element	{"0":1}