802.11 is a family of IEEE technical standards for mobile communication devices such as laptop computers or multi-mode phones to join a wireless local area network (WLAN) widely used in the home, public hotspots and commercial establishments.
This provides a mapping between the IP's differentiated services code point (DSCP) to over-the-air Layer 2 priority on a per-device basis, facilitating end-to-end QoS.
A network will be able to allow access based on the user's relationship with an external network (e.g. hotspot roaming agreements), or indicate that online enrollment is possible, or allow access to a strictly limited set of services such as emergency services (client to authority and authority to client.)
As such data is valuable to tourism promotion and other public functions, 802.11u is thought to motivate more extensive deployment of IEEE 802.11s mesh networks.
[4] Unlike most TLS implementations of HTTPS, such as major web browsers, the majority of implementations of EAP-TLS require client-side X.509 certificates without giving the option to disable the requirement, even though the standard does not mandate their use, which some have identified as having the potential to dramatically reduce adoption of EAP-TLS and prevent "open" but encrypted access points.