Some of the browsers that are currently available do not support the Java virtual machine, so when those interested carry out electronic procedures with Public Administrations (AAPP) they may encounter the inconvenience of not being able to sign with a digital certificate.
Law 11/2007, of June 22, on citizens' electronic access to public services (now repealed), expressly contained several principles, such as that of technological neutrality (article 4.i)), which have not been transferred in its entirety in Law 39/2015, of October 1, on common administrative procedure of public administrations, nor in Law 40/2015, of October 1, on the legal regime of the public sector.
Nevertheless, the dominant doctrine has stated on repeated occasions that in no case could it be considered that the new regulations represent a step back both in the recognition of principles and rights to citizens. That is why, even if it is not included in the new legislation, it is considered that the principle of technological neutrality (and others) is also part of the regulations on electronic administration.
For this reason, to guarantee the principle of technological neutrality, it would be advisable for the AAPP to implement (or provide) some solution that allows the public to carry out these electronic procedures regardless of the browser they use.