In article , Frank Slootweg
wrote:

wifi does not need a lan or an access point. it can go direct
between
two devices.

It is well known.

it's not well known, as it's a fairly recent addition to the spec and
only recent wifi radios support it.

FSVSVO "recent", unless you consider 5 years to be "recent".

wifi is ~20 years old, so yes,

In this context - mobile devices - 5 years is a long time, i.e. *not*
"recent", period.

the context is *wifi*.

mobile devices are not the only devices to use wifi. far from it.

so yes, and its still not widely adopted yet
including android, which will be in 'o', a system that doesn't even
have an official name.

We're talking about Wi-Fi Direct, not some future networking facility.
Wi-Fi Direct exists in Android (4.1) for *five years*, period.

but not wifi aware, which is newer:
https://developer.android.com/preview/features/wifi-aware.html