Abstract: According to examples, a system for enabling user authentication may include a processor and a memory storing instructions. The processor, when executing the instructions, may cause the system to receive user login credentials and initiate a user authentication process by receiving a challenge configured using an attribute of a system including the processor. The processor executes further instructions to determine the attribute value and to derive a zero-knowledge proof in response to the challenge. The zero-knowledge proof is provided to the challenge issuer to access services of one or more applications.

Abstract: An alcove whirlpool seat of the present invention includes a seat member, a seat back, and arm portions on opposite sides of the seat back. The seat back and at least part of the arm portions substantially define a whirlpool area and the arm portions define an open span through which the legs of a user extend when he is seated in the alcove whirlpool seat. At least one jet nozzle is used to direct a stream within the whirlpool area. The at least one jet nozzle, the seat back, and the arm portions together create a whirlpool within the whirlpool area. Exemplary alcove whirlpool seats may be an angled-arm embodiment or a horseshoe embodiment. An alcove whirlpool seat spa system has an interior spa area. One or more whirlpool areas are defined by one or more alcove whirlpool seats within the interior spa area. Within the interior spa area (and outside the whirlpool area) is a spa water flow. The whirlpool flow within the whirlpool area is substantially separate from spa water flow.

Abstract: An alcove whirlpool seat of the present invention includes a seat member, a seat back, and arm portions on opposite sides of the seat back. The seat back and at least part of the arm portions substantially define a whirlpool area and the arm portions define an open span through which the legs of a user extend when he is seated in the alcove whirlpool seat. At least one jet nozzle is used to direct a stream within the whirlpool area. The at least one jet nozzle, the seat back, and the arm portions together create a whirlpool within the whirlpool area. Exemplary alcove whirlpool seats may be an angled-arm embodiment or a horseshoe embodiment. An alcove whirlpool seat spa system has an interior spa area. One or more whirlpool areas are defined by one or more alcove whirlpool seats within the interior spa area. Within the interior spa area (and outside the whirlpool area) is a spa water flow. The whirlpool flow within the whirlpool area is substantially separate from spa water flow.

Abstract: An alcove whirlpool seat including a seat member, a seat back, and arm portions on opposite sides of the seat back. The seat back and at least part of the arm portions substantially define a whirlpool area and the arm portions define an open span through which the legs of a user extend when he is seated in the alcove whirlpool seat. At least one jet nozzle is used to direct a stream within the whirlpool area. The at least one jet nozzle, the seat back, and the arm portions together create a whirlpool within the whirlpool area. Exemplary alcove whirlpool seats may be an angled-arm embodiment or a horseshoe embodiment. An alcove whirlpool seat spa system has an interior spa area. One or more whirlpool areas are defined by one or more alcove whirlpool seats within the interior spa area. Within the interior spa area (and outside the whirlpool area) is a spa water flow. The whirlpool flow within the whirlpool area is substantially separate from spa water flow.

Abstract: An alcove whirlpool seat including a seat member, a seat back, and arm portions on opposite sides of the seat back. The seat back and at least part of the arm portions substantially define a whirlpool area and the arm portions define an open span through which the legs of a user extend when he is seated in the alcove whirlpool seat. At least one jet nozzle is used to direct a stream within the whirlpool area. The at least one jet nozzle, the seat back, and the arm portions together create a whirlpool within the whirlpool area. Exemplary alcove whirlpool seats may be an angled-arm embodiment or a horseshoe embodiment. An alcove whirlpool seat spa system has an interior spa area. One or more whirlpool areas are defined by one or more alcove whirlpool seats within the interior spa area. Within the interior spa area (and outside the whirlpool area) is a spa water flow. The whirlpool flow within the whirlpool area is substantially separate from spa water flow.