Abstract: In some embodiments, a non-transitory processor-readable medium stores code representing instructions configured to be executed by a processor. The code includes code to cause the processor to receive, at a first compute device, (1) a message signed using a signature associated with a derived private key of a second compute device, and (2) an identifier. The code further includes code to cause the processor to retrieve, using the identifier, an ascendant public key associated with the second compute device. The code further includes code to cause the processor to generate, using a key derivation function with the ascendant public key and the identifier as inputs, a derived public key that is paired with the derived private key. The code further includes code to cause the processor to authenticate the second compute device by verifying the signature using the derived public key.

Abstract: A disposable visor to be worn on a user's head comprises a substantially flat body made of a flexible sheet material. The flat body includes a bill section that projects forwardly from the user's head when the visor is worn by the user to shield the user's face from the sun and a head-band section that connects to the bill section and forms a continuous uninterrupted band that encircles the user's head. A head opening is formed in the flat body and is configured to receive the user's head. A plurality of flexible fingers surrounds the head opening and are adapted to engage the user's head when the visor is worn by the user. During use, the fingers bend upwardly when the visor is placed on the user's head to adjust the head opening to the size of the user's head.

Abstract: A disposable visor to be worn on a user's head comprises a substantially flat body made of a flexible sheet material. The flat body includes a bill section that projects forwardly from the user's head when the visor is worn by the user to shield the user's face from the sun and a head-band section that connects to the bill section and forms a continuous uninterrupted band that encircles the user's head. A head opening is formed in the flat body and is configured to receive the user's head. A plurality of flexible fingers surrounds the head opening and are adapted to engage the user's head when the visor is worn by the user. During use, the fingers bend upwardly when the visor is placed on the user's head to adjust the head opening to the size of the user's head.

Abstract: In one embodiment, an information-delivery system includes a first mechanism for identifying an entity for which to gather information and providing identity information in response thereto. A second mechanism employs the identity information to retrieve rating information pertaining to the entity, wherein the scoring information includes quantified information pertaining to one or more measures of performance, and the user's ethical preferences. The rating information includes environmental information, health information, and/or social information. The rating information further includes components that are each associated with a user-configurable weight. The second mechanism includes plural data sources, wherein each data source is associated with a user-configurable data-source weight. This allows a user to scan a product, receive information on its social, environmental, and health performance, all screened through the user's personal preferences.

Abstract: In one embodiment, an information-delivery system includes a first mechanism for identifying an entity for which to gather information and providing identity information in response thereto. A second mechanism employs the identity information to retrieve rating information pertaining to the entity, wherein the scoring information includes quantified information pertaining to one or more measures of performance, and the user's ethical preferences. The rating information includes environmental information, health information, and/or social information. The rating information further includes components that are each associated with a user-configurable weight. The second mechanism includes plural data sources, wherein each data source is associated with a user-configurable data-source weight. This allows a user to scan a product, receive information on its social, environmental, and health performance, all screened through the user's personal preferences.