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With history on, shoppers can come back to their previous scans instead of starting from scratch.
Previous analyses with an option to start a new scan

Turn on history

By default, history is stored in the browser (localStorage and cookies). Nothing else is needed.

Store history in your backend

To make history follow a logged-in customer across devices, save scans in your own backend and pass them back with setHistoryData:
setHistoryData requires history: true.

Remove history

Remove one entry by its reference token, or pass null to clear all local history:

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Compare

Compare two scans, metric by metric.