Ann: Half Yearly Report and Accounts, page-7

Net tangible assets at 57c is pretty good. That doesn't include any value for intangibles which with new technology companies generally makes up the bulk of the value. Also no goodwill so all the contacts, testing, business relationships etc have no value assigned to them in this measure.

obviously you can keep spending cash with no result for years more and end up with nothing but it seems we are getting closer to commercialisation.
I followed this for years before dipping my toes in a few months ago. Down about 15% but one bit of good news re a commercial customer and I think this will start to fly.
the founder of Nvidia lost money for years too before Nvidia became one of the .biggest companies on the planet. All tech companies do. I don't think Canva at $40B valuation makes money yet.