TWAIN was not limited by PhotoShop, native (and naive) MS application "Scan & Fax" supported it too, and many other raster editors and document organizing applications too.
Also, TWAIN is not Windows-specific! It is (was?) supported on Windows, Linux and macOS. It was not invented by MS or Adobe, but by working group where MS and Adobe doesn't present!
Comments
TWAIN was not limited by PhotoShop, native (and naive) MS application "Scan & Fax" supported it too, and many other raster editors and document organizing applications too.
Also, TWAIN is not Windows-specific! It is (was?) supported on Windows, Linux and macOS. It was not invented by MS or Adobe, but by working group where MS and Adobe doesn't present!