How does Now Playing on Google phones work offline?

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I saw a post today on this sub talking about how Shazam is able to identify songs that are playing, which makes sense since it can compare to a lot of information, but I have a Google pixel which has googles “Now Playing” which does essentially the same task, but it works without any kind of connection (I’ve used it in airplane mode, middle of nowhere without cell service, etc)

Are these song fingerprints able to be stored small enough that it can just be stored to my phone at all times? It seems like it would take a large amount of storage to do so but I’m not sure what kind of information is actually stored for the fingerprints

In: Engineering

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