Abstract: Disclosed is a mobile device to authenticate a user. The mobile device may comprise: a first sensor; a second sensor to use more power than the first sensor; and a processor coupled to the first sensor and the second sensor. The processor may be configured to: collect data from the first sensor; determine if an environmental change occurred based on the collected data from the first sensor; engage the second sensor to collect data if the environmental change occurred; and modify a polling rate for the second sensor based on the collected data from the second sensor.

Abstract: Disclosed is a mobile device to authenticate a user. The mobile device may comprise: a first sensor; a second sensor to use more power than the first sensor; and a processor coupled to the first sensor and the second sensor. The processor may be configured to: collect data from the first sensor; determine if an environmental change occurred based on the collected data from the first sensor; engage the second sensor to collect data if the environmental change occurred; and modify a polling rate for the second sensor based on the collected data from the second sensor.

Abstract: Implementations relate to generating an operator, device, and platform-independent aggregation, cross-platform translation, enablement, and distribution of user activity catalogs. Users of a cellular telephone, a personal computer, or other devices or services can register to a database that collects transaction and other activity for the user. The user can designate one or more groups of users with whom to share collective activity data. The activity feeds can include recommendations, transactions, and other information generated when group members conduct retail or other activity. In one example, the activity feeds transmitted can be automatically translated and configured based on service operator and/or recipient device type. In another example, a user visiting a Website can be presented with a context-sensitive drop-down list of transactions conducted at that site by members of user's designated group(s) in the past.

Abstract: Implementations relate to generating an operator, device, and platform-independent aggregation, cross-platform translation, enablement, and distribution of user activity catalogs. Users of a cellular telephone, a personal computer, or other devices or services can register to a database that collects transaction and other activity for the user. The user can designate one or more groups of users with whom to share collective activity data. The activity feeds can include recommendations, transactions, and other information generated when group members conduct retail or other activity. In one example, the activity feeds transmitted can be automatically translated and configured based on service operator and/or recipient device type. In another example, a user visiting a Website can be presented with a context-sensitive drop-down list of transactions conducted at that site by members of user's designated group(s) in the past.