

I’ve done some work with near infrared spectroscopy on a similar problem to the tricorder “molecular scan.”. There are two-three main problems as I see it.
- A typical lab spectrometer might collect on 3,000 different frequencies to cover the spectrum. Meanwhile the sensor that is cheap enough to put in a tricorder has around 10 channels.
- The lab instrument probably has expensive and fragile optics. You can’t do the same thing on the tricorder because the optics will break when you drop it.
- Lab procedures rely on carefully controlling the illumination so it’s the same every time. Hard to do in the field, even in relatively benign field environments. This even comes down to using sample cuvettes that are precision machined to have two sides extremely parallel. You can’t make a tricorder that dispenses precision cuvettes for sample collection. If you can’t control the illumination, you have to measure it and calibrate.
Several years ago at this point, Congress passed a bill, and that bill was signed into law by the President. What that law says, is that TikTok cannot continue under Chinese ownership. Byte Dance either have to sell the American video app business so that it is controlled by Americans, or they have to shutdown Tiktok.
Byte Dance did not sell the business, so under the law TikTok has to shutdown. This law was lawyered all the way to the supreme court, and the court said it’s a valid law, and must be followed.
Despite all of these facts, the law is not actually being followed. And Tiktok is still operating in the United States. There is no legally valid reason for it to do so. President Trump has issued extension after extension, even though he has no legal authority to do so.
The latest here is the top law enforcement officer in the US telling the app stores, “yes we know it’s illegal to keep Tiktok in your app store, but I am pinky promising we won’t go after you.”