com.samsung.android.hmt.vrsvc reveals that it is Gear VR Service (from list of S6 bloatware on XDA).
Researching about Gear VR Service itself, it seems that Gear VR only supports a handful of devices officially (from Wikipedia):
- Galaxy Note 4 (developer version)
- Galaxy Note 5
- Galaxy S6/S6 Edge/S6 Edge+
- or Galaxy S7/S7 Edge
And thus, those devices have Gear VR Service* installed.
You can still check if your device has this by going to Setting - Application Manager - Gear VR Service, and check if it's there, enabled/disabled.
Image courtesy of Unreal Engine documentation
Regarding installing this service on other devices, I have searched and as of current writing, nothing came up. Most of them can only suggest to wait until Samsung officially push the Gear VR Software update to your device.
*may depend on update by carrier (from Reddit).