Apple's iPad browser is capable of many of the same things as a normal PC or Mac-based browser, including dealing with login-based websites. While it is certainly possible to examine your iPad's browsing history to determine which sites were accessed, there is no method for determining another user's login information. A quick glance at the iPad's browser history will show all logins and accessed pages.
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Open the Safari app by tapping its icon on your iPad home screen.
Touch the small icon that looks like a book in the upper left-hand corner of the browser.
Touch the clock icon to open the "History" tab.
Tap a date to see all browsing history from that date.