Zookeepers use iPads to talk to apes

Touch screens and smartphones are big business, but it's not just human beings that are tapping into the technology.

Zookeepers across North America are using iPads to communicate with orangutans.

And some of the same patterns seen in people using technology are also being observed in apes.

As a part of our special series, Al Jazeera's Caroline Malone takes a look at how great apes are getting to grips with the latest gadgets.