I want to know the answer to the following question:
What sort of LEDs are becoming more available on the market?
All the background I'm provided with is that "Near-UV emitters at wavelengths around 375–395 nm are already cheap and often encountered, for example, as black light lamp replacements for inspection of anti-counterfeiting UV watermarks in some documents and paper currencies.". Is that enough to answer the question?
Answer: no