This chapter describes a learning log system named SCROLL (System for Capturing and Reminding of Learning Log), which helps users to share and remind ubiquitous learning experiences. It is expected to powerfully assist the implementation of seamless learning. It proposes that seamless learning can be classified into seven types according to the mobile connectivity, and an empirical study in the context of English vocabulary learning at the university level is introduced. The results show that the test group registered fewer words, but learned more words than the control group, and that the linking in-class and outside-class function showed statistically significant effectiveness when excluding two exceptional cases. The participants predominantly used mobile devices during outside-class learning. Therefore, mobile connectivity is, undoubtedly, contributing to the realization of seamless learning in the sense of linking in-class and outside-class learning.