Slide-on HMD

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Slide-on HMD, also known as Smartphone mount, is the cheapest and most accessible form of virtual reality head-mounted display. The Slide-on consists of a smartphone holder, lenses and some form of basic input. A smartphone is inserted into the HMD and the entire device is played upon the eyes of the user to create the VR experience. The Slide-on utilizes the smartphone for display, processing and rotational tracking. Some Slide-on HMDs such as the Gear VR use their own built-in IMUs instead of relying on that of the smartphones. This method allows the HMD to create a superior tracking experience for the user.

Slide-on HMDs are often the cheapest form of VR if the user exclude the cost of the smartphone. Google Cardboard can be built or purchased for under $20 and Samsung Gear VR can be purchased for $99.

Devices	Requires	Display	Resolution	Refresh Rate	Field of View	Tracking	Rotational Tracking	Positional Tracking	Update Rate	Latency	Input	Connectivity
Daydream View	Daydream Ready Phones	5 / 5.5 inch AMOLED (Pixel / Pixel XL)	1920 x 1080 / 2560 x 1440 (Pixel / Pixel XL)	60 Hz	90° (nominal)	Degrees of freedom	Accelerator Gyrometer Proximity	None	Rotational: 1000 Hz High accuracy		Daydream Controller
Figment VR		Depends on the smartphone	Depends on the smartphone			Degrees of freedom	IMUs in Smartphone	None
Google Cardboard	Smartphone	Depends on the smartphone	Depends on the smartphone			Degrees of freedom	IMUs in Smartphone	None
Impression Pi	Smartphone	Depends on smartphone	Depends on the smartphone			6 DOF	IMU Board	IMU Board Infared Cameras? IR Projector?
Mi VR Play	Smartphone with display screen between 4.7 to 5.7 inches	Depends on the smartphone	Depends on the smartphone			IMUs in Smartphone
Samsung Gear VR (2015/2016)	All Samsung Smartphones 2015 and newer	5.7 / 5.1 inch Super AMOLED (RGBG PenTile)	2560 x 1440 1280 x 1440 per eye	60 Hz	96° (nominal)	Degrees of freedom	Accelerator Gyrometer Proximity	None	Rotational: 1000 Hz High accuracy	Motion to Photon: Less than 6 ms	Touchpad Back Button Volume Key Focus adjustment wheel	MicroUSB to the smartphone
Samsung Gear VR Innovator Edition	Galaxy Note 4 Galaxy S6 Galaxy S6 Edge	5.7 / 5.1 inch Super AMOLED (RGBG PenTile)	2560 x 1440 1280 x 1440 per eye	60 Hz Low-persistence	96° (nominal)	Degrees of freedom	Accelerator Gyroscope Magnetometer	None	Rotational: 1000 Hz High accuracy	Motion to Photon: Less than 20 ms	Touch Pad Back Button Volume Key	MicroUSB to the smartphone
Wearality Sky	Smartphone	Depends on smartphone	Depends on smartphone		150°	Degrees of freedom	IMUs in Smartphone	None