This Shiny app checks a SQLite database, in which users can save new studies, tasks and add participants. It provides the user with feedback about whether a potential study participant has already taken part in a previous study. Personal data is stored as SHA256 hashes.
A demo version is available at https://jcpsantiago.shinyapps.io/aiakos/
If you use Aiakos please cite it using the DOI 10.5281/zenodo.2631374.