GPS Attendance Management (Video) Product Content Team November 27, 2020 06:45 Updated Related articles How can I manage the GPS Attendance in greytHR? Reimbursement Workflow for Employee Portal (Video) Apart from Astra, what are the available modes of attendance marking in greytHR? I see an error low GPS accuracy message while I attempt to mark the attendance through the mobile app. What are the possible reasons? How can I mark attendance from my ESS portal?