This seems definitive. As with most of Brexit, the only question left now is whether the advocates of “technological solutions” were being deliberately deceitful or just dumb.
Technology can't prevent hard border in Ireland businesses told by woman charged by with planning how UK's borders will operate after Brexit. No magic technological solution for preventing a hard border in Ireland exists.
Senior UK HRMC official on how to avoid a hard border NI/IE: «What you need is (...) sth that looks like a customs union, plus sth that looks like a single market, no customs or tariffs or regulatory standards or controls“ -aka: the backstop.
Guess what? Technology can't magic away the Irish Border problem. Voting to abolish the laws of physics doesn't make them go away.