Abstract: In some embodiments, techniques for voting and visual cryptography may include various enhancements.

Abstract: Distributed distribution of patches and other updates is disclosed. A request for an update is received. In some embodiments it is determined whether the source of the request will serve as a redistribution point. If the source will serve as a redistribution point, a redistribution identifier associated with the source is stored. In some embodiments it is determined whether the update will be provided to the source of the request directly, e.g., from a (more) primary source of the update, such as a source that received the request, or indirectly, e.g., from a secondary source such as a host to which a (more) primary source provided the update previously. The request is serviced either directly or indirectly, in accordance with the determination.

Abstract: In some embodiments, a method for detecting a shared data element comprises providing a first feature of a first data element associated with a first storage device; detecting a second feature of a second data element associated with a second storage device, wherein the second feature is the same as the first feature; challenging the second storage device; receiving a response to the challenge; and determining whether the response is acceptable.

Abstract: In some embodiments, a technique for logging an item encountered by a mobile device comprises automatically detecting an item in an uncontrolled environment, extracting an identity associated with the item, logging an encounter, wherein the encounter includes the identity, and deleting the encounter after a predetermined period of time has elapsed, wherein the encounter is not marked as relevant.

Abstract: In some embodiments, a technique for providing location-based functionality comprises providing functionality, wherein the functionality uses information provided by a location-aware device.