A US school district is giving its surveillance system an upgrade with the introduction of facial recognition.
The technology introduced in a New York state district means they will soon check each face against a database of expelled students, sex offenders and other possible trouble makers.
It could be the start of a trend as more schools wary of shootings consider the technology.
Just last week, a Seattle company began offering a free version of its facial recognition system to schools.
Discussion about Lockport's facial recognition plan has provoked a debate.
The New York Civil Liberties Union wants to keep the technology out of schools in Lockport and throughout New York, calling it invasive and inaccurate.
Microsoft President Brad Smith called for government regulation in a recent blog .