Would a heart monitor readout be admissible evidence in a trial?

No, too many variables as to what would bring the heart rate up.
Bad memory’s, spicy food, fatigue. All will be brought up to discredit the data..

You might find this story interesting.

@johnpowell, That is a neat story.

@ChazMaz , What you are saying may be true, but I am curious if the recording could be blocked from entry based on privacy.

It would not be allowed in as evidence of strong emotion.

I’m not sure if it would violate privacy laws, but it could certainly give away private information such as whether or not a person is suffering from heart disease etc. The point could be argued, but I don’t know the Privacy Act well enough to say definitively.

Probably if could be properly authenticated and passed the relevancy test. This is allowed under the Rules of Evidence.