Abstract: A holding device is attachable to a shopping cart. The holding device includes a base portion attached to a cart handle of the shopping cart and a pair of adjustable slides movably attached with respect to the base portion. The adjustable slides define an interior portion for receiving a mobile device. The holding device includes at least one adjustment device positioned within the base portion and attached to each of the adjustable slides. The at least one adjustment device biases the adjustable slides towards each other so as to support the mobile device between the adjustable slides.

Abstract: A system for providing advertising information to a user includes a holding device attached to a shopping cart. The holding device removably holds a mobile device. The system includes a recognizable indicia supported by the holding device. The recognizable indicia is recognizable by the mobile device. As such, the mobile device can transmit a first set of information related to the recognizable indicia to a server and receive a second set of information from the server in response.