**2. Literature Search**

We performed parallel literature searches on Web of Science, PsychInfo, PubMed, and IEEE Xplore. Considering the rapid advance of technology throughout the last decades, we focussed on the last 10 years (2009–2019) to give an overview of recent developments in this field. Searches were performed on 29 May 2019. Our search terms were (autis\* OR ASD OR Asperger) AND (sensor OR sensors) AND (fac\* OR voice\* OR body motion\* OR person\* OR regoc\* OR identi\* OR emotio\* OR diagnos\*). Furthermore, the considered language was restricted to English. Overall, the search resulted in 386 articles (Web of Science *N* = 185, IEEE Explore *N* = 109, PubMed *N* = 52, PsychInfo *N* = 40). Note that we only included publications with original data from an ASD or high-risk group, such that new algorithms on preexisting data sets were not included. We also included the reference lists of identified articles with respect to additional screening for relevant publications. After removing duplicates, this selection process resulted in a total of 36 articles. These are discussed below, and those articles that focused on assessment or intervention are additionally summarized in Tables 1 and 2, respectively.

## **3. Supporting Assessment: Identification of ASD Related Features**
