What brand of VR box does Obama experience today?
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I believe that many people, like reporters, have been greeted by the news of "Barack Obama and Merkel experiencing VR at the Hannover Messe" early this year. Many domestic and international reports have focused on the leaders of the two countries who have enjoyed the experience of VR experiences, VR experiences, and the Hannover Industrial Show. They have even prepared for this. However, the reporter was curious about the VR box equipped with a camera.
According to VR Vertical Media RoadtoVR, the VR box that Obama experienced was a modified version of the Cardboard box. In addition to the same optical system as Cardboard and the need for a mobile phone as a display, the new version of the VR box adds a device called a "3D camera." 
Different from what we saw with the Cardboard box, the new version can not only see the VR content, but also let us see the effect of the above picture. This is the three-dimensional effect of the “3D camera†capturing two-handed movement data. These gesture data will also be incorporated into the VR content as one of the means to identify interactions. In fact, there are many things you can do to map human motion data to VR. For example, you can interact with the VR world through gestures. This means that we can abandon the current controller and manipulate it directly with gestures.
Seeing here, many people will think of Google's Black Project Tango project. In February 2014, Google announced the successful development of a prototype of a new Android phone called Project Tango. This is a mobile phone that draws the surroundings in a 3D model. That year, all people who saw Project Tango’s promotional videos began to be crazy about it. Therefore, many people think that the secret weapon of Google VR is Project Tango.
In fact, Project Tango has connections with the founders of Obama's experience with VR boxes. The VR box is from a German company PMD Technologies (hereinafter referred to as PMD) and is a chip supplier of Project Tango.
According to the data, the PMD was formerly a central laboratory for a research sensor system (ZESS) at the University of Siegen, Germany. However, in 2002, the company was separated from the University of Siegen in Germany and formed a company. Then it was acquired by another company and established the current PMD.
In essence, PMD is an image sensor supplier specializing in CMOS based on 3D TOF Imaging (3D imaging using TOF technology) technology. It is not only a supplier of Project Tango, but also a leading manufacturer of TOF imaging. Currently, it is also famous for its acquisition of SoftKinetic by Sony and MESA Imaging in Switzerland.
TOF full name of Time of flight, literal translation as the time of flight technology, the principle is to continuously send light pulses to the object through the sensor, and use the light reflection time to calculate the distance of the object to draw the three-dimensional contour of the object.
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