opening food containers as an issue for healthy as well as for
disabled people. He elaborated design criteria for easy-to-use
packaging and made recommendations for the development of
packaging according to consumer requirements. Our results
confirm that the focus of packaging development must shift towards
consumer needs and usability (Dittrich and Spanner-Ulmer,
2010; Duizer et al., 2009). Nevertheless, being easy-to-open is not
equally important to all users, as can be seen from our results