Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, by a first computing device of a first user, for obtaining an image of a code presented on a display of a second computing device of a second user, deciphering the code to obtain an identifier of the second user and a signature, verifying that the signature is valid and, based thereon, initiating a first transaction: preventing the first user and the second user from entering into any other transactions until the first transaction is completed or canceled, receiving an acceptance of the first user to transfer a first amount of a digital currency to the second user, obtaining a digital currency network address of the second user based on the identifier, initiating the transfer through a digital currency network using the digital currency network address of the second user and a private key of the first user, reporting the transaction to a remote system, receiving a confirmation from the first user that a second a

Abstract: The present invention provides for a financial value transfer system wherein financial value can be transferred between an account associated with a mobile telephone user and a stored value card.

Abstract: The present invention is generally directed toward a system and methods of placing content, including advertising, content on a mobile device in response to an event in the operational lifecycle of the device. The event defines an opportunity between power-up and power-off when the user's attention is likely drawn to the device. The inserted content can be any media form including graphic, image, video, animation, audio or textual and can be fully interactive. The content is inserted before, during, or after an event in a minimally intrusive manner so as not to interfere with the communications features of the device. The system and method reward the user for each display of content.