Britain to introduce compulsory digital ID for workers

> Stored on mobile phones, the ID would contain details including a name, date of birth, residency status and crucially a photo - which would distinguish it from National Insurance numbers.

Surely it will be possible to also store it on some government-issued, GCHQ-vetted digital device, and not rely on foreign companies (Google/Apple) and their locked-down mobile platforms?

This is the most alarming aspect of the proposal to me. I find it wild that the government will require me, by law, to buy an expensive electronic device I don't want or otherwise need, in order to be employed. It's absolutely amazing to me that the government is forcing me to spend money in this way.