Google Cardboard was the Alphabet company's first virtual reality (VR) headset, but a new report suggests it is developing a mid-range device that would challenge Samsung's Gear VR.  The new VR viewer would feature a plastic casing instead of cardboard, better lenses and sensors, and support for more smartphones than the Oculus-Samsung headset.

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Google Cardboard was launched about a year and a half ago in 2014. It contains two plastic lenses holding the smartphone in the right place so it can operate as a VR gadget.

The Financial Times reported Google's plans for a new VR headset. Its tech specifications imply that the unit would not rely entirely on the smartphone's hardware, although the mobile device will provide most of the processing power, according to The Verge.

The new VR headset could have the same function as the company's Nexus smartphones. It could be used as a model for the search giant's hardware partners.  

It is likely Google will introduce the new gadget at its I/O annual developer conference in May. It could reportedly hit the retail market in September.

The new VR hardware might be rolled out with Google's Android VR operating system. The Wall Street Journal reported last year that the VR software was being developed.

A virtual reality OS would make it easier for developers to create apps since VR would be baked into the Android OS itself. Google Cardboard only includes an internal app that functions within the device.                                                          

Android VR would also solve common virtual reality problems. Reducing lag would make it less likely for headset users to get dizzy after a long session, according to Engadget.

Last month Google posted job openings for VR-related positions. There are many unanswered questions including whether Android VR would integrate the Project Tango platform allowing mobile devices to detect their location without GPS.

Goblin VR also recently launched a Kickstarter campaign for a pocket-size VR viewer. The Goblin headset is a hands-free, compact, ergonomic, and light-blocking unit that would function with Android and iOS smartphones.  

Goblin's new headset is still a prototype. It includes two high-end 35-milimeter lenses and a synthetic rubber sleeve.  

Here's a Google Cardbard roller-coaster ride: