The present invention provides a process for incorporating a wireless device (8,100) into a disposable container (2) as part of the steps of manufacturing the container, and to a disposable container (2) incorporating a wireless device (8,100). The plastic container can be a flexible plastic container/bag and is formed of one or more sheets, generally two or more sheets of plastic film (4) or a rigid plastic container such as a tub or tote. The containers/bags are formed by sealing together adjacent edge portions (6) of each film layer (4). One embodiment of the present invention is to incorporate a wireless device (8,100) between the edge portions (6) of the film(s) (4) before or during sealing so that the wireless device (8,100) becomes permanently sealed into the film material but is isolated from both the bag interior and the outside environment. Another embodiment is to incorporate the wireless device (8,100) onto or into a plastic component (10) that is sealed to the container, such as a nipple or port (10), so that the wireless device (8,100) becomes permanently sealed to the container but is isolated from both the container/bag interior and the outside environment.