Supporting the supermarket shopping experience through a context-aware shopping trolley. - Darren Black; Nils Jakob Clemmensen; Mikael B. Skov (OZCHI, 2009)

Pervasive Computing in the Supermarket: Designing a Context-Aware Shopping Trolley. - Darren Black; Nils Jakob Clemmensen; Mikael B. Skov (Int. J. Mob. Hum. Comput. Interact., 2010)