Abstract: Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key.

Abstract: The invention relates to the use in a photovoltaic module of a monolayer film as a backsheet, this composition comprising, with respect to the total weight of the composition from 50 to 100% of amorphous copolyester. The invention further comprises a backsheet of the amorphous copolyester film with two optional films adhered to it, an adhesion promoting film and an anti-weathering film. The invention further encompasses a photovoltaic module comprising the backsheet composition, and an optional scrim layer, according to the invention.

Abstract: An aerobic stepper having exercise related items and equipment stored therein. The stepper is made of an upper and lower locking section which, when locked together, can be carried as a unit by an external molded handle. The lower section has several compartments configured in shape and size to hold a water bottle, dumbbells and a folded towel. The upper section may store a folded workout mat which is retained by two straps having hook and loop end fasteners. The sections and internal compartment may be made by the plastic injection molding process or the blow molding process.