AT&T’s new day passes let you get your iPad online for 24 hours at a time, when you need it. | Photo: David Pierce / The Verge AT&T has introduced a new "Unlimited Day Pass" cellular data offer for iPad users who need brief connectivity instead of signing up for a long-term plan. The day pass is available for $3 in the US starting today, providing 24 hours of unlimited data, with no contracts, subscriptions, or credit checks required. This offer is available to anyone, including non-AT&T custo