The disclosure encrypts and decrypts data using public key infrastructure with and allows an authorized third party to access and decrypt the encrypted data as required without requiring private key escrow. % or more, a viscosity index of 110 or more, and a sulfur content of 0. A second risk is linked to a control objective in the data structure. The persons operating the pouch pay terminal and the cashier terminal take the liquidated tickets to the ticket liquidating machine to get cash they have already paid to the players. The set of predetermined frequency ranges includes a first frequency range and a second frequency range including the first frequency range.