YOUR heartbeat is as distinctive as your signature, American researchers
believe. Doctors may one day be able to call up your medical records simply by
clipping a pulse monitor onto your finger.
There is plenty of anecdotal evidence that doctors can identify patients by
their electrocardiogram (ECG) signals, says Mark Wiederhold of the Science
Applications International Corporation of San Diego. So he decided to find out
if there could be something in it.
Three volunteers performed various tasks while a team of researchers measured
the spacing between a number of specific points on their ECG signals. Some of
the tasks…
