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The javascript version of NemID can be used on mobile devices, e.g. phone or tables and does not require the end users to have java installed.
No matter the implementation the NemID integration error codes from Nets are described here: https://www.nets.eu/dk-da/kundeservice/nemid-tjenesteudbyder/NemID-tjenesteudbyderpakken/Documents/NemID%20Error%20Codes.pdf
NemID Javascript
DanID/Nets has information available about Javascript here:
http://www.nets.eu/dk-da/Produkter/Sikkerhed/NemID-tjenesteudbyder/NemID-JavaScript/
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