Abstract: Example data management systems and methods are described. In one implementation, a data management system includes a carbon key configured to store at least one authentication factor associated with a user. The system also includes a hardware wallet configured to communicate with the carbon key. The hardware wallet includes a fingerprint sensor configured to scan a fingerprint of the user, a display configured to receive a personal identification number (PIN) from the user; and a system on chip (SOC) configured to authenticate the carbon key, the fingerprint, and the PIN. Additionally, the SOC can sign a transaction based on authentication of at least two of the carbon key, the fingerprint, and the PIN.

Abstract: Communication systems and methods support communication between multiple devices. In some embodiments, a method initiates a communication session between a first device and a second device via a server. The method identifies a first user associated with the first device and identifies a second user associated with the second device. An interaction history between the first user and the second user is accessed from the server and communicated to the first device for display on the first device.

Abstract: Communication systems and methods support communication between multiple devices. In some embodiments, a method initiates a communication session between a first device and a second device via a server. The method identifies a first user associated with the first device and identifies a second user associated with the second device. An interaction history between the first user and the second user is accessed from the server and communicated to the first device for display on the first device.

Abstract: Communication systems and methods support communication between multiple devices. In some embodiments, a method initiates a communication session between a first device and a second device via a server. The method identifies a first user associated with the first device and identifies a second user associated with the second device. An interaction history between the first user and the second user is accessed from the server and communicated to the first device for display on the first device.

Abstract: A system and method for uniquely combining the best aspects of the Internet and the Public Switched Telephone Network for calling an entity displayed on a monitor. A user provides an input to the computer to initiate a call. The call request data is received at a Web site providing the display, and is relayed over the Internet to a call center. The call center establishes the desired phone connection over the Public Switched Telephone Network.