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Certainly it's not possible, yeah. A better test might be to have the AI report either confirmed good, confirmed toxic, or unknown. Even an experienced mushroom hunter needs to humbly put many mushrooms into the "unknown" category.

No. At the very least you need a photo of both the upper side of the cap and the gills.

many species of mushroom cant be identified just by looking, spore print is a necessary differentiator for many species, and as the article notes, for some species DNA sequencing is the only way to be sure.