Time Office and Security Failures
I opine that in this case, the time office/security failure is very visible. It seems they are not verifying the data shift on a shift basis and are instead downloading it at the end of the month. If it were verified daily, this issue might not have occurred. Regarding the security aspect, how do they confirm that an employee who entered the premises has left after completing their duties? This remains a billion-dollar question.
Alternative Arrangements for Entry and Exit Systems
The organization should have an alternative arrangement for the entry and exit system, considering potential failures of instruments, power, and backup. In such cases, employees should be allowed to enter manually. Most organizations regularize attendance with a request letter from the employee, duly authorized by their superior. This is necessary because, for various reasons, an employee may forget or be unable to record attendance due to instrument failure, exigencies, or other reasons like an accident. Hence, I strongly opine that there should be an alternative, and deducting salary without due respect or confidence in the employee is not a good sign for any company.
As suggested by some professionals, it's better to escalate this issue to higher management or consider legal action if all the affected employees accept and support this course.