The article writes that the use of facial technology by law enforcement is spreading fast, but that there are many doubts about its effectiveness and how public bodies will use the information gathered.
Privacy advocated, it writes, « remain concerned that facial recognition technology will become deployed too widely, too fast, and with too few restrictions as to how and where the facial data is kept. »
As an example, the article points out that « Vigilant Solutions, the California company that maintains the [US’] nation’s largest private license plate reader database announced last month a mobile app for police officers to scan license plates and faces with just the tap of a button. »
http://arstechnica.com/tech-policy/2014/11/more-police-departments-are-using-facial-recognition-technology/