Abstract: A device may passively record or transmit data characterizing the environment of a user and/or the physiological condition of the user. The device may encrypts and/or cryptographically sign data for storage and/or transmission. Cryptographically secured data may be transmitted from the device to at least a second computing device, either in real-time or after being stored. Encrypted data may be decrypted only if the private key associated with the user is provided. Cryptographic signature(s) may validate the data. A device may optionally operate in conjunction with a mobile communication device. Batteries to power the operation of the device may be used as part of a strap that may retains the device to the user.

Abstract: A method and system for the testing of multiple elements in a communications network. The method may include using a test host that has both control and data input/output capabilities. The test host may send a signal over the network via one communication device, such as a mobile station, that is connected to and controlled by the test host. A resulting signal may then be received at the communication device or at a second communication device, which may be another mobile station, that is connected to and controlled by the test host. A comparison of the signal sent into the network with the signal received from the network may be used to verify proper operation of any elements in the network.