A method includes receiving a request regarding an exchange item that is associated with a computing device. The method further includes generating first dynamic exchange item information based on static exchange item information. The method further includes generating a first verification code based on the first dynamic exchange item information and the request. The method further includes sending the first verification code to the computing device. The method further includes receiving a computer ID and a reply code. The method further includes determining whether the computer ID matches the static owner ID. When the computer ID matches the static owner ID and the reply code corresponds to the first verification code, sending the first dynamic exchange item information to the computing device. When the computer ID does not match the static owner ID or the code does not match the first verification code, deleting the first dynamic exchange item information.