Abstract: Apparatus for intravascular access device displacement detection, where an intravascular access device is inserted into a blood vessel through the skin at an access site. The apparatus comprises electrodes located on either side of the intravascular access device which electrodes are mobile with the intravascular access device and attachable to the skin about the access site. The electrodes have a micro-current flow therebetween, which is sufficient to induce a current through the skin between the electrodes and the current persists as long as the electrodes are connected. If the device moves then one or more of the electrodes are disconnected and the micro-current is interrupted. A displacement alert device issues an alert signal upon interruption of the micro-current.

Abstract: A system for collecting user feedback in a data broadcasting system, the system for collecting user feedback including a multiplicity of user profile agents, each user profile agent being associated with one of a multiplicity of users of the data broadcasting system and being operative to create a user profile based on activity of the one user, a user profile subsystem associated with a plurality of user profile agents chosen from among the multiplicity of user profile agents and operative to derive an integrated user profile based on the plurality of user profiles created by the plurality of user profile agents, and a broadcasting agent operatively associated with a broadcast center of the data broadcasting system and in operative communication with the user profile subsystem and receiving therefrom the integrated user profile.