A group of researchers at Northwestern University have developed a small device for N95 masks with sensors that alerts when it is not properly fitted, increasing the risk of Covid-19 exposure..

The means of protection is only effective when it is well placed and there are no leaks, engineers at Northwestern University in the USA have created a sensor the size of a small coin that is placed inside the mask and warns the user if there are any risks. The goal of this device is to keep the project open source to be available to everyone.

The small electronic module attaches to the mask via a magnetic system inside the N95 mask, and in the current version there is a battery that needs to be recharged frequently. The intention of the developers is to be able to upgrade to a model that collects energy either thermal or from the movement caused by breathing to ensure that the battery does not need to be recharged.

However, the target audience for this device is essentially healthcare professionals who spend long periods of time working with the same mask, and who do not always have the time to go through the process of checking that they are isolating correctly.

FaceBit can detect if the mask has shifted and become misplaced, and uses sensors to detect changes in airflow, which may indicate a leak. On the other hand, the module can contain sensors for breathing and head movement detection, and can also monitor the wearer's health.

However, for users, this solution can make the difference in containing contagion, and for health institutions it can provide important information to understand whether workers continue to perform their jobs at a good pace or whether they are already showing signs of wear and tear or even extreme fatigue, Gizmodo reminds us.