I've been sitting here trying to do sleepy morning train commute maths. 1billion scans per month, 50,000 scanners worldwide (!). 1 minute scan time. Lowers platform at 5cm/cm. FTA. Globally, apparently in 2023 there were 250,000 spas worldwide. [0]
Their numbers would suggest these 1 billion people, getting scanned by 50k scanners, have each scanner doing 20k scans a month. 31 days, 24 hours, we have 744 hours in which to do these. That's 20k scans/744 hours, giving you 26.8 scans/hour. One scan'll be 2.2min. 2 minutes 14 seconds.
If this machine is 200cm big, lowers at 5cm a sec, that gives you 40seconds to lower. One minute to scan. 40 seconds to get you back up, presumably. Even if we're generous and double that, you're at 2 minutes just to lower, scan, and yeet you back up.
Giving you 14 seconds between scans. To clean, maintain, etc. Seems like this machine will output investor AI hype, bacteria, and false positives.
I linked the spa statistics because there's the question of how they'll even get the room for these machines but whatever.
I don't think this changes anything important, but my understanding is that the lowering is the scan -- you go through the ring, which captures data about the slice currently inside it. That gets you down to ~80s, which rounds to a minute (they say "about 5 cm/s").
Now, there's a lot of other reasons to be skeptical (e.g. there's no information on what all of this imaging could actually resolve), but please don't shoot the message.