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It seems like this technology can be used on historical videos. It'd be interesting to see the heart rates from past speeches where we know they lied, to see if there is a good correlation.

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A lot of the sample videos have very high frame rate, so it might not work on historical video.

That is an awesome idea.

I imagine the drug atenolol would become popular among politicians.

That, or the radio address will once again become immensely popular.

Until realize that even though the filters in this post have been applied to videos. It will be just as easy to apply the filters to audio, surely again resulting in a revealed heartbeat :)

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