They still do give tours, Fridays at noon, you must arrive about 10 (or more) minutes early, you need current gov't issued I.D. No food or drinks, no cameras, no umbrellas (I went recently on a sunny day and they couldn't stress the no umbrellas ever-in any weather enough)...be prepared for airport style security measures. The public 'walk-up' tour is an abbreviated tour, you don't get to see any currency handling or processing but you do see the currency collection. If you have a group and book the tour in advance, it is a longer tour, you do see currency being processed.
