Nearly as important as whether a portable scanner accepts one or multiple pages is whether it has two sensors, one for each side of a two-sided page. Two sensors allow the device to capture both sides simultaneously (duplex scanning), as opposed to scanning one side, flipping the page over manually, and feeding it back into the scanner to capture the other side (simplex, or manual-duplex). Most portable sheetfed scanners are duplex, though some of the lower-end portables scan only one side at a time. When scanning one- or two-page documents on a manual-feed scanner, capturing one side at a time isn't so bad, but the more two-sided pages you scan, the more time-consuming and tedious simplex scanning becomes. An ADF will save you a bit of trouble for longer two-sided documents. If you want to scan a page from a book or something else that can't be fed into a conventional scanner, you'll want a wand scanner such as the IRIScan Book 5, which you hold in one hand and pass over the object you're scanning.