“…Proloquo 2Go, Μy Talk, Go Talk Now Free) and structured behavioral interventions were successful in leading to the expression of an independent request for preferred objects (Nepo et al, 2017•Ward et al, 2013• Dundon et al, 2013• Shih et al, 2014 in up to 100% in some studies (Van der Meer et al, 2011;Kagohara et al, 2010;Waddington et al, 2017). Vocal responses were expressed by participants in some studies (King et al, 2014;Nepo et al, 2017). Wendt et al, (2019) taught two teenagers and an adult, with very limited speech, to request a multi-step request and speech production using an iPad, the apps Speak all!…”