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: A monitoring apparatus and method includes a monitor, a sensor comprising a wireless connection with the monitor, and an adapter comprising the wireless connection with the monitor and a wired or wireless connection with a remote monitoring station. The monitor is designed to wirelessly pair with the sensor and/or the adapter when being only positioned by a user in a closed proximity to the sensor and/or the adapter or in a direct contact with the sensor and/or the adapter and without an additional action by the user and/or a wired connection between the monitor and the sensor and/or the adapter. A pairing alignment mark may be provided on each of the monitor, sensor and adapter.

Abstract: A system of reusable carriers provides an assortment of reusable and selectively collapsible component carriers suitable for the various types of goods a shopper encounters at, for example, a grocery store. The component carriers all have either attached clip loops or clips and are connectable to each other via the clips and clip loops. Information about the system of carriers may be accessed via at least one QR code associated with the system.

Abstract: A system of reusable shopping bags provides an assortment of reusable and selectively collapsible bags and carriers suitable for the various types of good a shopper encounters at, for example, a grocery store. Specific embodiments provide one or more large insulated freezer bag for frozen goods, one or more grocery bags for sundries, one or more veggie bag for vegetables and fruits, at least one carrying case pak, and one or more pod. Some of the bags are stowable in the freezer bag and in other embodiments component bags are stowable in the carrying case pak. The freezer and grocery bags may have adjustable handles and specific embodiments provide a shoulder cushion pad selectively mountable on the handles. Kits with instructions allow customized bag systems to be assembled.