cell phones and with that we can see if people move let's say from one community to to another one or if they move from Vienna to Lynch or whatever but we cannot sufficiently assess whether I would be sitting in the Train next to you or you are sitting at the beginning of the Train and then actually also where we are not even interested in the information and we don't have to technologically I set access to that information I think that's more a topic of the very front okay but combining your data with GPS and Wi-Fi data would