In 2011, Vtech made a set of Sesame Street eBooks for its interactive E-Reading system, featuring Ernie, Bert, Elmo and Abby Cadabby.
Bert and Ernie's Imagination Adventure, for the V.Smile
Elmo and Abby: Nature Explorers, for the MobiGo
Elmo's World: Elmo's Big Discoveries, for the V.Smile
The Happy Scientists, for the V. Reader