A much better idea is to put the terminals near entrances and exits, where they can easily clock in and out as they enter the building. Here at Tensor, we even have an "On-Site" option, separate from "Clocked-In", which will account for any employees arriving very early to work. Our clocking in methods — fingerprint biometrics or RFID smart-cards — are also very quick, at less than a second per person, so you don't need to worry about huge queues forming in the morning.