CheckIn@ISS is a free Android application developed by ISS World Services AS. It is designed to streamline the check-in process for ISS employees and sub-contractors at their workplaces. The app allows users to check in and out of work places using iBeacons or QR codes located at the entrances.

With CheckIn@ISS, users can easily view their check-in history, and receive notifications when they are about to leave a work place without checking out. The app also provides real-time information on the number of people currently checked in at a work place, enabling users to avoid overcrowding and maintain social distancing.

Overall, CheckIn@ISS is a useful tool for any ISS employee or sub-contractor looking to simplify their check-in process and stay up-to-date with the latest information regarding their work place.