Your personal cloud of microbes could one day be used to profile you

Every time we sneeze, cough, scratch, fart, or touch something, we leave behind traces of ourselves. Could this microbial evidence one day be used to identify and surveil us?

Police can demand fingerprints but not passcodes to unlock phones, rules judge

Fingerprints are what you *are*, passcodes are what you *know*. Therefore the police can demand your fingerprints to unlock a phone without contravening the Fifth Amendment, according to a judge in Virginia, USA.