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Spatial Mapping reliant on Wifi
Hi, I'm still trying to completely grasp how the Hololens works. I noticed that it associates areas with wifi signatures. Does this mean that it uses the wifi hotspot as a reference point so it knows where to place everything else relative to it?
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Peter_NZ
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It uses the Wifi Access Points (i.e. the Wifi fingerprint) as an index to store spatial mapping data against (called a space). Then when you visit the space again (detected via Wifi) it loads the that space again, but uses the spatial mapping to align the stored space to your current position. In this way if you have applications or anchors at locations within a building they will magically reappear in the same location when you restart the Hololens.
It makes no difference whether you are connected to the Wifi or not or your position relative to the Wifi access point. If you have no Wifi access points detectable at all the spatial mapping won't work and you will need to use in limited mode. But this is easy to work around by setting up a mobile hotspot but when you need to delete your spaces when switching to a different location on the same hotspot as you can get unusual behaviour of the Holograms disappearing as the Hololens thinks you are in a wrong location!
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Answers
It uses the Wifi Access Points (i.e. the Wifi fingerprint) as an index to store spatial mapping data against (called a space). Then when you visit the space again (detected via Wifi) it loads the that space again, but uses the spatial mapping to align the stored space to your current position. In this way if you have applications or anchors at locations within a building they will magically reappear in the same location when you restart the Hololens.
It makes no difference whether you are connected to the Wifi or not or your position relative to the Wifi access point. If you have no Wifi access points detectable at all the spatial mapping won't work and you will need to use in limited mode. But this is easy to work around by setting up a mobile hotspot but when you need to delete your spaces when switching to a different location on the same hotspot as you can get unusual behaviour of the Holograms disappearing as the Hololens thinks you are in a wrong location!