Abstract: A customer computer accesses, through a network, a media content file, as follows. A session is opened between a customer computer and either an application server or a media content server. A request to view a media content file is received from the computer. A temporary metafile having a temporary metafile name is created. The metafile contains a network address where the media content file can be obtained, an encrypted name of the media content file and an unencrypted file path leading to the media content file. The temporary metafile name is sent to the customer computer. The customer computer requests the temporary metafile to learn the encrypted media content file name, unencrypted media content file path and the network address. The customer computer subsequently sends the encrypted media content file name and the unencrypted media content file path to the network address to obtain the media content file.

Abstract: An apparatus is provided for containing an animal in a defined area. The apparatus comprises first and second communicating units; one operatively associated with the animal, and the other positioned to locate the area. At least one of the units is adapted to transmit a signal, and at least one of the units is adapted to receive the signal. A circuit is adapted to measure the transmission time or change in transmission time of the signal and calculate the distance between the first and second units. At least one of the first and second units is configured to emit an output to contain the animal in the area when the transmission time corresponds to the animal leaving the area.