[beagle3]

Web browsers have been around since 92, first usable guest mode [1] on a web browser appeared 2005 or so. Give the phones a little more time, and it will get there too.

[1] mozilla had multiple profile support since forever, but it required you to restart the browser with a command line argument, or requires you to pick a profile every time, and even then it's not "guest" profile -- it's another profile with history and all. When I needed multiple profiles, it was always easier to set up another user on Linux. [On windows, at least in the 2000 days, the new browser would defer to the old one that was already on screen even if they were RunAs different users -- a different "desktop session" was required for separation. bleh]