Biometrics on RPi...quite possible, depends upon quality of the sensing node, and the former one can be implemented through RPi as a cloud-gateway, connected to individual low power end nodes.
You've posted three polls with very odd questions. If you want to provoke some discussion it might be better to post a bit of explanation and ask more open questions.
I've "voted" no in this one - if you want to know why you'll need share your agenda.
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