"That is precisely the kind of situation the VIP identification technology designed by is supposed to prevent.
The UK-based company already supplies similar software to security services to help identify terrorists and criminals. It works by analyzing footage of people's faces as they walk through a door, taking measurements to create a numerical code known as a "face template," and checking it against a database.
In the retail setting, the database of customers' faces is comprised of celebrities and valued customers, according to London's . If a face is a match, the program sends an alert to staff via computer, iPad or smartphone, providing details like dress size, favorite buys or shopping history.
The software works even when people are wearing sunglasses, hats and scarves. Recent tests have found that facial hair, aging, or changes in weight or hair color do not affect the accuracy of the system."
The facial recognition is also being used for various passport control, security applications