A wheel chair includes a back support pivotally attached to a base frame and having a handle and a hand grip pivotally attached to the handle, a housing is secured to the base frame and includes a chamber to slidably receive a shank which has one end pivotally attached to the back support. The docking station can include a cabinet with two doors that swing in different directions and a locking mechanism that regulates the opening and closing of those doors. The apparatus can communicate with a server having destination information. Following the first or both precleaning steps, the features can be filled with metal by available moralization techniques which typically include depositing a barrierliner layer on exposed dielectric surfaces prior to deposition of aluminum, copper, or tungsten. Also provided is a corresponding decryption method, an encryption device, a decryption device. In a case where a scanning result of scanning a scan-band of a priority order indicates that an access point of a roaming destination is not present, the scanning section scans a scan-band of a lower priority order than the priority order.