Riders will be able to rent the bikes with membership cards, credit cards, or cash. Though the price hasn't been set, it's expected to be about $5 an hour. City officials say they hope to discourage theft, which could be a major obstacle to the program, by requiring even those paying cash to provide their names and addresses. Unfortunately, helmets won't come with the bikes, so those who value their brains should bring their own sturdy headgear.