In 1985, ZKTeco (previously ZKSoftware) was established and began research and development of the fingerprint algorithm which made us a leading global developer of security and time management. Over the past decades, ZKTeco specializes in the manufacture and development of time & attendance and access control technology and sold more than 8.5 million units in over 180 countries. ZKTe... https://www.zkteco.me/cloud-based-time-attendance-solution