There is a market for an off-the-shelf system or maybe customizable system with the same core that cities can purchase and install without the need to do development. Maybe with different levels of strictness as far as scanning in employees is concerned (biometric scanning vs. RFID cards, etc).
Most likely it's more than time tracking. It's also paychecks. And once you get into paychecks in government, there are LOTS of nasty little loopholes and special rules that apply only to this small set of people, etc, etc, etc.
