The "Bokito Kijker" let's you watch gorilla's without being attacked.

In the Netherlands, Bokito has become a real phenomenon. He attacked a woman that was looking at him in the Rotterdam Zoo.

What it is?

The Bokito Kijker or The Bokito Viewer, translated to English, is a piece of eyewear with an image of human eyes looking to one side. It has peekholes, so you can watch gorilla's without giving them the instinct to attack you.

Why it's cool?
The glasses are effective, that'll keep the gorilla's calm. Plus, watching groups of people walking around with those glasses might be way more fun than watching gorilla's!

Source: http://www.buzzfeed.com/peggy/no-eye-contact-glasses/