They may even have received a severe facial injury or taken a drugs overdose.
In the case of Facebook facial recognition, the company is now using billions of photos people have uploaded to build a facial fingerprint database.
FORBES: Let's Face Facts About Facial Recognition Technology (Inside and Outside of Facebook)
Internet search giant Google Inc. also considered, but rejected, a project that would have offered facial recognition on mobile phones.
WSJ: Police Adopting iPhone-Based Facial-Recognition Device by BI2, Raising Civil-Rights Questions
However, for researchers who have been analyzing facial expressions in a lab for decades, this feature was nothing short of ground breaking.
FORBES: Volkswagen Ad Gets Better the More You Watch It: Results from the Affectiva Smile Tracker
The mustachioed and bearded stars of Turkish soap operas wildly popular across the Middle East, North Africa and the Balkans have helped repopularize facial hair as a symbol of virility and machismo.
By stretching the inside of the cheeks of several patients who have complete facial nerve palsy with a finger, while performing routine checks for ulcerations or trauma, Ms Clapham caused the paralysed facial muscles to move - something not seen before.
There was even a hairdressing salon where men could have their facial hair shaved with an open razor, made possible because the barber's chair was set in such a position that there would be "no jolting".
Many other artists have since worked in a similar vein, portraying their most extreme facial expressions.
The politicians of all parties have for the past 30 days grown facial hair as part of a campaign to raise awareness of prostate cancer.
This is the beauty of animation: it allows a cerebral joke to expand through, say, exaggerated facial expressions that a human being might not be able to perform, or have a character in a setting not normally available in real life (when was the last time you traveled to a liger breeding facility?).
FORBES: The Eye of the Liger: Why Animated Series 'Napoleon Dynamite' Is A Good Bet for Fox
But after patients who were treated with Botox showed a decrease in facial lines, an increasing number of physicians since the mid-1990s have used it to reduce forehead creases and crow's feet wrinkles, which are caused by muscle contractions directly under the skin.
These traits were competence, dominance, likeability, facial maturity (in other words, did the individual have an adult-looking face or a baby-face) and trustworthiness.
It's one of a select number of facilities that has advanced facial recognition software that could find eggs from donors that have similar features to the patient.
After a recent study showing that facial recognition technology is at a point where it can identify strangers with reasonable accuracy if they have Facebook accounts, the novel amateur crime-fighting technique seemed momentous.
FORBES: 'London Riots Facial Recognition' Vigilantes Abandon Their Project
Google's technology would have let cellphone users take pictures of people, then conduct an image search on Google to find a person with matching facial features.
WSJ: Police Adopting iPhone-Based Facial-Recognition Device by BI2, Raising Civil-Rights Questions
应用推荐