Alas, the forged date can’t be removed without damaging the document.
Pores for thought: how sweat reveals our every secret, from what we’ve eaten to whether we’re on drugs
Just one drop of perspiration might soon be enough to identify a criminal or diagnose a cancer. But this fast-moving science could also pose a serious threat to civil libertiesWhen I deposited my index fingerprint on a laboratory slide so that Simona F…