This chapter presents the results of a narrative literature review study of acceptability of new assistive and information technology, including Internet of Things (IoT) technologies and artificial intelligence, by older adults (65 or older). The study followed a careful search strategy in specific databases and was based on inclusion/exclusion criteria and keywords. The search strategy resulted in 28 articles, which reflected the research aim, and were reviewed on the basis of an interpretive approach and critically appraised in accordance with the ‘critical assessment skills programme’ guidelines. This study is an important contribution to scholarship because, unlike other literature reviews, it explored both assistive and information technology and looked for overarching reasons why older adults may accept new technology. The results showed that older adults accept technology when they have a good sense of control over the devices and their lives, the technology is useful, has characteristics which are not threatening, and other compromising factors such as financial cost, restricting health conditions and inappropriate physical environment are not present. Based on these findings, we propose the N-ACT principles whereby technology developers should consider users’ Needs, Adjustable technology and personalised service, users’ Control over technology and their lives and Trust in technology.