Adi wrote:

> Is there a reliable but easy to use method to pick-up someones pulse?

My admittedly limited knowledge is that they are using either an IR
emitter on one side of the finger (or earlob) clip and an IR detector on
the other side, or an emitter/detector pair on just one side.  At any rate,
whether detecting the IR through or bounced, they look for variations in
the IR level to detect pulse.

This is at least true in the two aerobic machines that I have collecting
dust in my garage, as well as the local doctor's office and ER room that I
visited recently.

Michael

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The strong do what they have to do and
the weak accept what they have to accept.
                             --Thucydides