Facebook brings free voice calls to iOS

Facebook has brought free voice calls to the iOS version of its Facebook Messenger app.

The service, currently limited to US users, allows you to call anyone else who has the Facebook Messenger app installed on their phone, provided you both have a Wi-Fi or data connection (a bit like, say, the existing Viber app). Unlike Skype, you can’t call a mobile or landline number.

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“Papertab” paper tablet is your flexible friend

Flexible e-ink displays are one thing, but an actual working tablet that’s as thin as a sheet of paper – that’s impressive. And that’s exactly what the Papertab is.

Developed by researchers at Queen’s University, Canada, the Papertab is a fully interactive touch-sensitive 10.7-inch sheet of plastic able to display documents, images, videos and the like.

Bending the corner up or down allows you to “turn” pages back and forward, which is nice, but perhaps more interesting is the idea of combining multiple Papertabs (ten and upwards), with each showing different

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