Systems that require you to log in your attendance via a dedicated computer can jeopardize your attendance when there is a crash or some other systemic glitch. However, when you login your presence via biometric attendance devices, it means you get paid for every minute you work. In the systems which required you to mark your attendance via an identity card, or an access card, there was considerable risk of fraud. Colleagues and friends have been known to give proxy attendance with another’s card. When your retinal scan is used, nobody can give proxy. For HR personnel, it eliminates one of their biggest headaches. For the management in general, it increases the productivity and profitability of the organization.