See Keith's introduction here: worldpressphoto.org/academy/apps-photojournalist

Links to the apps mentioned:

Google Plus Hangouts Virtual Photo Walks
Take your audience on assignment with you
plus.google.com/+VirtualPhotoWalksTM/posts

7 Scenes
Document a community from the palm of your hand
7scenes.com

Not in video...
Layar
Augmented reality for traditional publishers
layar.com

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