Abstract: This invention relates to the field of motor vehicle safety systems. Specifically, this invention creates a horntones audio player device, a new and useful method and a system that allows a user to sound custom motor vehicle horntones for alerting, locating and other purposes. The main elements of the system are a horntones audio player, a portable memory device and a remote computer. The player enables the user to sound custom horntones while the remote computer and the portable memory device operate together to both download new horntones files from a horntones website and transport the new horntones files to the horntones audio player.

Abstract: This invention relates to the field of Electronic Mail Systems. Specifically, this invention creates a new and useful method, a system and an unique computer program product for preventing delivery of undesirable (junk or spam) electronic mail messages to intended recipients. This invention authenticates the source address of every incoming electronic mail message, enabling the recipient to receive electronic e-mail only from trusted sources. This invention does not use predetermined lists, text-scanning filters or trusted-user-classification methods. Instead, it uses proprietary messaging feedback algorithms to authenticate the source address of each message, including but not limited to the sender's e-mail address.