No case for the N800 will achieve that unfortunately. The best you can do is add support to my bug #943 - you may disagree with the suggested options, please suggest alternatives it's really a starter for discussion.

The important thing is to make Nokia realise that some of us don't want an "always on" (always connected) device - I get the impression from this (lengthy!) discussion that Nokia have a usage philosophy for the N800 which is in conflict with the case previously provided for the 770.

As there are many places and times when we need to disable communication (certain businesses or security concious locations demand this) and also the device itself (such as when putting it in a pocket!) it's obvious a quick and easy method to replicate the 770s "case on" functionality is necessary.

If/when bug #944 is resolved you can vote on the bug #943 as well!