The Barclays has a massive bike rack that can hold up to 400 bikes. According to NetsDaily, Barclays paid Transportation Alternatives, an advocacy group to be 'bike valets' on Wednesday night:
[sny-box]Transportation Alternatives, under the rubric "One Less Car," provided valet service, locking the bikes and holding on to the helmets, then at concert's end, returning both to the riders. Like a coat check for bikes. About 100 riders took advantage of the free service Wednesday.
Forest City paid Transportation Alternatives. The program was an experiment and no one's saying how it might work for bicycling Nets. It's one thing to bike to a concert in June. It's a different experience in December or January. Still, the valet service may become permanent at the arena, depending on the outcome of the experiment.[/sny-box]