Sima is a cloud-based authentication platform that provides highly secure, seamless access control for companies and organizations. Sima helps users establish schedules for visitors' access to their sites, allowing them to grant permission during specific hours and refuse it at others. The system's database query feature makes it easy to see when people arrived at or left a facility—allowing users to track the whereabouts of everyone who was present. Additionally, it offers customer support via phone, email, FAQs, chat and more.