I do see many advantages; credit cards are insecure (all the important info is written on them) and even debit cards machines can be modified or replaced to sav

I do see many advantages; credit cards are insecure (all the important info is written on them) and even debit cards machines can be modified or replaced to save your password and card info; but with the phone there is none of those risks. Also I would like to mention that there is no need to read it from a printed receipt, you read it from another device the cashier haves and that is it; wish is a green solution and can be promoted as such. And if someone steals your phone (hopefully) you have a pattern to unblock it and before the thief can crack it you cancel the app account or change its password.