For "eParaksts Token Signing" functionality, a custom plugin/Extension must be installed on the end user's computer for browsers that communicate with the smart card.
End user plugin/extension installation are distributed with eParakstītājs 3.0 software package
Using the JavaScript API function getBackendInfo, it is possible to determine the state of the installed plugin/extension. In situations where the plugin/extension is not installed or its version is out of date.