Why are there so many vertical/horizontal stripes on my display? June 20, 2022 08:46 Updated A: Attendance machine screen is damaged, please contact SVANTTO after-sales technical department for maintenance. Related articles Why does the attendance machine die and operate without any response? Why can't I clock in after registering my ID card What can't my machine connect to the Internet? Comments 0 comments Please sign in to leave a comment.