Abstract: A shopping cart having an affixed circuit board and computer readable memory. The circuit board and memory are operably connected to a first bar code scanner and a second bar code scanner, wherein the first scanner is detachable for scanning larger items while the second scanner is permanently affixed on a sidewall of the cart. A display screen is disposed on the handle of the cart. The shopping cart has a plurality of wheels, wherein the wheels selectively move between a locked and unlocked state. The wheels unlock upon an identification card actuating an electronic locking mechanism. The cart is separated into two main compartments for item storage, wherein additional compartments for personal belongings and bagging items are included. A receipt printer is also operably connected to the logic and computer readable memory. Weight sensors are disposed on a bottom surface of the two main item storage compartments.

Abstract: Systems and methods for controlling a baseball bat swing are disclosed. A system in accordance with a particular embodiment includes an upper arm portion, a lower arm portion, a light source, and a pinch gear. The upper arm portion can be pivotably connected to the lower arm portion and a pinch gear can adjust an angle between the upper arm portion and the lower arm portion. A mounting device can releasably secure the upper arm portion to a user's arm. The system can be employed to train the user to achieve a consistent baseball bat swing.

Abstract: Systems and methods for controlling a baseball bat swing are disclosed. A system in accordance with a particular embodiment includes an upper arm portion, a lower arm portion pivotably connected to the upper arm portion, and at least one releaseable attachment device carried by the upper arm portion and positioned to releasably attach to the user's arm. The system can further include an adjustment element operatively coupled to the upper arm portion and the lower arm portion, with the adjustment being manipulatable to control an angle between the upper arm portion and the lower arm portion. The system can be employed to train the user to achieve a consistent baseball bat swing.

Abstract: Systems and methods for controlling a baseball bat swing are disclosed. A system in accordance with a particular embodiment includes an upper arm portion, a lower arm portion pivotably connected to the upper arm portion, and at least one releaseable attachment device carried by the upper arm portion and positioned to releasably attach to the user's arm. The system can further include an adjustment element operatively coupled to the upper arm portion and the lower arm portion, with the adjustment being manipulatable to control an angle between the upper arm portion and the lower arm portion. The system can be employed to train the user to achieve a consistent baseball bat swing.

Abstract: Systems and methods for controlling a baseball bat swing are disclosed. A system in accordance with a particular embodiment includes an upper arm portion, a lower arm portion pivotably connected to the upper arm portion, and at least one releaseable attachment device carried by the upper arm portion and positioned to releasably attach to the user's arm. The system can further include an adjustment element operatively coupled to the upper arm portion and the lower arm portion, with the adjustment being manipulatable to control an angle between the upper arm portion and the lower arm portion. The system can be employed to train the user to achieve a consistent baseball bat swing.