A new tool for monitoring #COVID19 may one day be right under your nose: color-changing test strips that can be stuck on masks and used to detect SARS-CoV-2 in a person’s breath or saliva.

The most notable change is the color, according to a VSP statement. For the first time ever, the stickers will be green. That replaces blue, which had been the color of choice since 2019.

Called Liquid Contact Indicators (LCI), these are tiny color-changing stickers that are placed in various places inside a device -- usually near ports, SIM card slots, and other ingress points for ...

A new tool for monitoring #COVID19 may one day be right under your nose: color-changing test strips that can be stuck on masks and used to detect SARS-CoV-2 in a person’s breath or saliva.