An engineering student in Illinois has put together a handy map to help pinpoint locations where police are tapped into Ring’s surveillance network.

Ring, a company best known for smart doorbells and home security cameras, has a massive network of these cameras installed, some of which are being used for surveillance purposes by police in certain cities.

Shreyas Gandlur, a senior at the University of Illinois at Urbana-Champaign put together a map of these locations.

At the time, FFTF’s version only included about 50 cities, though more than 225 police departments were currently using the surveillance network.

Adding additional cities came with a little help from Gizmodo.

Ring pre-writes almost all of the messages shared by police across social media, and attempts to legally obligate police to give the company final say on all statements about its products.

CHAMPAIGN, Ill. -- Researchers have found a way to use polymer printing to stretch and flatten twisted molecules so that they conduct electricity better.

The conjunction allows electricity to travel very quickly through a polymer, making it highly desirable for use in electrical and optical applications.

This mode of transporting charges works so well that conjugated polymers are now poised to compete with silicon materials, the researchers said.

However, these polymers tend to contort into twisted spirals when they join, severely impeding charge transport.

"Even a slight twist of the backbone can substantially hinder the ability of the electrons to delocalize and flow."

It is possible to flatten conjugated polymers by applying an enormous amount of pressure or by manipulating their molecular structure, but both techniques are very labor-intensive, Diao said.