Changes

The Chaperone system is a utility design by [[Valve]] to be used with their [[Virtual Reality#Platforms|VR platform]], [[SteamVR]], and [[Virtual_Reality#Devices|Head Mounted Display]], the [[HTC Vive]]. Once set up, it keeps track of where a user is in relation to the physical walls around them, and if necessary, shows a [[#Collision Bounds|blue grid]]<ref>http://www.tested.com/tech/concepts/504521-htc-vive-vs-oculus-crescent-bay-my-10-vr-takeaways/</ref> within the user's virtual space to notify them that they are in close proximity to a physical barrier. The [[HTC Vive]] provides tracking within an approximately 15 foot by 15 foot area, and the Chaperon system provides the user with confidence that they will not collide with physical barriers as they experience their virtual content. The first working prototype was introduced at CES 2016 with the announcement of HTC's second Vive development kit.

The main purpose of the Chaperone system is to warn the user when they approach a physical barrier, to which they are blind because of the headset they are wearing. This will ideally prevent collisions and minimize accidents. This may help [[, and thus solve the problem of real space navigation in virtual reality]] experiences be more [[immersive]] because the observer trusts that they are safe . The system recognized objects and represents them in user's field of view as glowing outlines and silhouettes. It makes it entirely possible to change position from standing to sitting on a chair, walk from object to move around object in real world, and safely take advantage of all space that the environmentroom users play in provides.

At The only remaining problem and potential danger is the time of writingattached cord. Unfortunately, the set up procedure for the Chaperon system involves manually delineating the corners of the physical space with the [[SteamVR Controllers]]. One other limitation of the Chaperone system is that it is currently limited to mapping does not detect the floor and walls of a space. This means that if the user's space includes a couch it would not be mapped cord, and would present an invisible obstacle (it could, however, be defined as the limiting 'wall' on that side of the space). Finally, the physical model built by the Chaperone system is static. If any portion of the setup changes, such as moved furniture, possible for users to trip over it would not be reflected in the model and therefore not be used to guide the userfall.

===HTC Vive Pre===HTC Vive Pre is the second Vive development kit. The headset has been first consumer-ready implementation of Chaperone was introduced at CES 2016, and it adds a front-facing pass-through camera used for object and boundary recognition. It solves the problem of real space navigation while immersed in a virtual reality. Recognized objects are represented in user's field of view as glowing outlines and silhouettes. It is now entirely possible to change position from standing to sitting on a chair, walk from object to object in real world, and safely take advantage part of all space that the room users play in provides. The system has two modes of operation. In the first mode, the HTC Vive is inactive until users get close to a wall or an obstacle. The Pre headset then shows a glimpse of the real world to give users enough time to react and avoid any obstacle. The second mode is activated by double-tapping a menu button on the controller. In this mode, users see an instant view of all their surrounding.  The only remaining problem and potential danger is the attached cord. Unfortunately, Chaperone does not detect the cord, and it is possible for users to trip over it and fall.