The first US university to accept Apple Pay at all locations campus-wide turns out to be the University of Oklahoma, according to a blog post from the school. In total, the ultra-secure mobile payment system is accepted at some 400 point of sale locations at the university, from the campus bookstore to all the restauarants. Apple has been a popular vendor at the One University technology store on campus, and also promotes UO content on iTunes U and on iBooks.