Hypo Mobile Shopping VeroPay has been developed for use on a smartphone and is optimized for this use case. You can install the application on any iOS or Android tablet but there might be improper presentation of the Blue Code (a barcode, the kind you usually find on products in supermarkets). 

Due to security reasons VeroPay currently can only be used on one device per bank account. If you have installed VeroPay on a tablet but would rather use the VeroPay app from your smartphone, you'll have to cancel your current tablet registration and subsequently redo a smartphone registration. Your new code will again take approximately two banking days (you'll find the code in the purpose field of your 1-cent credit wire).