In the current scenario, bio-metric system could be used. However, the SOP by State/Central Govts and District Administration shall be strictly followed, like social distancing, sanitizing, thermal screening etc.
In the system where finger prints are used, a big bucket of soap water with clean cotton cloth shall be made available. Employees shall wash their hands with soap water and also clean the surface of the bio-metric where finger or thumb is placed, before and after displaying finger/thumb
It is also advisable to make available one company supervisor's service at the time of
IN/OUT of staff members. This is the case where large number of employees are working.
In companies where small number of employees are working, instead of bio-metric, manual attendance system could be worked out and the security guard at the Main gate of factory/establishment can note the names of employees at entry & exit time of companies.