I don't like the fact if you had checked in via mobile and sent your BP to your iPhone and directed to the site where it shows your barcode if you have to go back to the browser it will try to refresh and it will ask for it again because it had timed out. Has any of you experienced that? I've had to ask for a paper BP from the gate because of this as it won't let me check in again because i have to refer to my original one which has timed out.