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For those stymied by the ambiguous parse in the title: Pigs using tools, recorded using cameras.

I initially read it as we are using (even better) tools to record pigs.

This is in part because an article about pig facial recognition frontpaged on HN before: https://news.ycombinator.com/item?id=19277846

I'll admit I didn't think of it that way, but that is a neat and funny ambiguity indeed.