Abstract: Identity and access control systems and methods employ a registry that receives a request for confidential data from a client, together with a secure enrollment profile identifier for the client, and generates and sends a challenge token to the client, which encrypts and returns the encrypted challenge token to the registry. Thereafter, the registry confirms that the encrypted challenge token is validly encrypted and calls up a security backend with authorization to provide the requested confidential data to client, and the security backend sends the requested confidential data to the client.

Abstract: A slalom water-ski training device comprising a main channel member having a vertical upright member that is rigidly mounted substantially perpendicular thereto at one end thereof. At least two auxiliary support braces are connected at one end to the vertical upright member and connected at their opposite end to the main channel member. At least one stabilizing member is rigidly connected to and in substantial coplanar relation with the main channel member a proximate predetermined distance from the vertical upright member. A ski rope is detachably and reattachably connected to the vertical upright member at a free end distal the main channel member. A ski board is slidably and swivelly mounted to the main channel member. A resilient sliding resistance means is attached to the main channel member distal the vertical upright member and the ski board for the purpose of applying a substantially elastic resistance to the sliding longitudinal displacement of the ski board.