A Spectra Physics Model A supermarket scanner—one of the first ten ever produced. A laser within the unit projects a beam onto a mirror that redirects it through the glass plate on the top. Cade ...

Western Australia’s police are now scanning faces in real time. The technology works – roughly. The laws to govern it do not ...

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Correspondence to Dr Margo Mountjoy, Department of Family Medicine, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON N2G 1C5, Canada; mmsportdoc{at}mcmaster.ca In 2014, the ...