Check if UDID is real

Question

How can I check if the iphone/ipad UDID is real device using web-service?

To explain that, i need to send UDID to my webservice to as a user id, but I need to avoid any fake UDID.

Please tell me how can we can make that possible?

Answer 1

There is no way to know if any UDID is "real" or not on your server.

You want to look into secure authentication procedures where the UDID is used as a key to generate a hash that is exchanged.