1) Ship something. "App Stores" make that easy. Interviewer can easily download your app(s) and have plenty of material to ask you about during the interview.
2) Get hired into "QA" — preferably for a position that allows you to write (code) tests. Many of our "testers" where I worked moved into engineering when they were seen as willing and able to make the move.
In my experience, this never happened.
I strongly suspect that was because they had already decided they weren’t going to hire me (I was 55, when I was interviewing), and didn’t want to waste the time.
Here's my GH ID: https://github.com/ChrisMarshallNY
You can easily see that I faked over a decade of checkin history, dozens of repos, in multiple organizations, over 20 shipped apps, lots of blog posts, tutorials, class modules, etc.
I don't know the context of how that came up, but I'd probably let the recruiter know of their unprofessional behavior if that happened to me.
In my case, since I had been experiencing veiled insults and condescension from almost every interviewer (and being "ghosted" by recruiters, when they find out my age), I just said "Bugger this for a lark," and decided to retire early.
I doubt anyone misses me, but I am pretty sure that I could have helped at least one of the companies from going titsup.
I know that my generation (and the one before) have caused many issues, but I'm not your typical "OK boomer."
There good cause for "the law" in daily reality (as opposed to "The Law" as an abstract good) not to be held in any esteem by ordinary folk.
But it is not enforced. Tech companies don't bother to hide it at all. They run job ads that all but say "Bros only."
When money is being made, the authorities tend to look the other way. That has been going on in the finance industry for decades (and don't get me started on crypto).
However, I gave the opportunity to a few, and they ignored it. In at least one case, their ignoring it was a fairly blatant move to get me to give up. It worked.