Have you put this research before your university or college ethics committee.
Because I don't see you giving the slightest thought to confidentiality, including the disposal of data afterwards, and your acadmic institution should be reprimanded if they allowed you to do this.
Also data collected in this uncontrolled manner has no scientific validity, and if your examiners are competent they should fail a project that collects data this way. You must have control over the parameters of your sample population.
