Abstract: An artificial pancreas system comprising electronic circuitry, a glucose sensor, and an insulin delivery system configured to be placed in the mouth. The artificial pancreas system is configured to measure glucose levels in saliva of the mouth and deliver insulin to the venous system of the mouth. The amount of insulin delivered is a function of the glucose measurement data measured by the glucose sensor. The artificial pancreas system is configured to excite the delivery of insulin ultrasonically and provide electrical stimulation to tissue in the mouth. The artificial pancreas system is configured to form channels in the tissue wherein a portion of the delivered insulin is within the channels in the tissue to be absorbed by the venous system of the mouth.

Abstract: An electronic funds transfer system employs a means to verify a personal identification number PE entered by the user with the correct PIN (PT) stored at the host terminal. The remote and host terminals each generate an encryption key, and encrypt PE and PT at the respective terminals. These values are transmitted to the other terminal, where they are re-encrypted using the other encryption key. The double-encrypted numbers are then compared. The user-entered PIN can thus be verified without the need to share en encryption key between the remote and host terminals. The encryption transformation is of the type where the results of successive encryptions does not depend on the order of encryption.