the orange thing is actually a timing chip. the picture was taken after the Richmond Marathon and they use a little plastic timer that i just stuck under the velcro strap. I'm not too familiar with the nike plus hardware, but i'm sure you could fashion a way to hook it on. there's a forum on birthdayshoes.com where i'm sure someone has either addressed the issue or could answer. hope that helps and enjoy the shoes, i love mine!