I spent some evenings making a little project to help tournament players with poor memorization skills (i.e. myself). I call them WPPR Cards. You can get your own little calling card and save it to your phone's home screen. That way my IFPA player number is always one click away and tournament directors are happy.
Read more and get your own: http://blog.hgstrp.com/archives/2014/wppr-cards-your-ifpa-calling-card/