Ainakin vuonna nakki numeropalvelu hoiti tällaisen neuvonnan ja osasi ohjata oikeaan paikkaan.
It was brought up in the article as better security.
"Moreover “Light’s line-of-sight propagation enhances security by preventing wall penetration, reducing jamming and eavesdropping risks, and enabling centimetre-precision indoor navigation,” says Shultz."
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