There simply aren't enough hours in the day for all the shopping that couture's elite clients wish to do.

I send regular portfolio valuations but some clients wish to hear from me more often than others.

For example, if a client wishes a window to be created, it requests the server to create a window with a given identifier.

Subject to client wishes, programs are kept confidential.

Clients wishing simply to send and receive packets without routing them for others can use simpler approaches such as 802.11u authentication which avoid pre-authentication.