SAN FRANCISCO – State Senator Scott Wiener, D-San Francisco, introduced a bill on Tuesday that would prohibit law enforcement from making arrests or filing charges based only on certain field tests ...

Colorimetrix, a new app developed by researchers at the University of Cambridge (UK), turns any smartphone into a handheld spectrophotometer that can read and deliver results from colorimetric tests.

However, remote or at-home testing introduces various additional logistical and technical issues, such as guaranteeing timely test delivery to a testing user, providing test delivery from a testing ...