That is, if a Croatian programmer is able to work out the kinks in his experiment.
From The Next Web:
Responsive design has recently become a buzzword, and for good reason: it captures the idea of displaying your content beautifully on each and every device. Responsive typography has also received attention, and various techniques have emerged to encourage type legibility across devices: like displaying different font weights to compensate for Retina displays.
Now, an experiment by web designer Marko Dugonjić has taken the concept of responsive typography to a new level: using face detection, Dugonjić calculates the proximity a user is from his or her screen, and then adjusts font size accordingly.
Of course, this isn’t an exact science; there are varying opinions on how large body type should be for proper legibility, and the eyes of the user plays an important role (that’s difficult to calculate).
The crux of this, however, comes from the demonstration GIF posted by TNW, which shows the text decrease in size as the user's face gets closer to the screen.
To check out the GIF, and learn more about the weirdness/coolness of this facial detection, check out The Next Web.