optional

USC is “test optional” in its application process and students can decide whether or not to submit scores.

“Transparency isn’t optional in a democracy,” she continued.

Data will be stored only on the smartphones of individual users, and digital IDs will be optional.

Under the revised proposal, the new system would remain entirely in public hands, the data on the electronic IDs would be stored on users' smartphones rather than centrally, and it would be optional.

However, for students, pensioners or others not seeking work, having a digital ID will be optional.