Sure, I like puzzles as much as the next person, but trying to decipher illegible or incorrectly calculated time sheets does not count among my favorite brainteasers. A time and attendance system can help solve this puzzle once and for all.

A time and attendance system keeps track of when your employees sign in and out of work. This information can then be compiled to produce the total hours worked and the amount that the employees should be paid. More advanced systems can automatically consolidate this information across multiple locations, track how hours are allocated across projects, and monitor overtime hours.

The time tracking device is at the heart of every system. There are a variety of data collection devices available. The most popular tracking devices include magnetic badge card readers and bar code label badge readers. Both types do have their drawbacks, though. The magnetic strip on magnetic badges can be damaged fairly easily, which can require the issuing of new cards more often than other types of badges. And bar code label badges suffer from ease of replication-a quick trip to the copier can be enough to make a usable copy of the badge.

If you prefer, a PIN code can be entered for tracking purposes. In this case, a computer can be used for tracking the comings and goings of your staff. This can be a single computer dedicated for that purpose or be available on all computers on a network to allow people can log in and out of their own computers.

The most advanced systems consist of devices that can recognize people simply by reading their hand or fingerprint or retinas. The primary benefit of this system is the authentication it provides. Since they require the actual person to be present, biometric devices ensure that "buddy punching," where another person signs in or out for another person, can not happen. You also have the additional benefit of not having to issue cards, or replace lost ones.

If you have employees who work from a remote location or telecommute, time can be called in a number of ways. Telephone-based systems allow you to do so via an interactive voice mail system and Internet-based systems support logging in via computer. For workers who are constantly on the go, you may want to take a look at tracking time via wireless PDAs.

Regardless of the device type, the data needs to be downloaded to time tracking software. Ideally, this software should be compatible with your payroll processing to ensure the seamless transfer of information. While most time tracking software is typically installed on a computer in your office, Internet-based time tracking systems can be a reasonable alternative for businesses with a high-speed connection.

Time and attendance systems range in cost from less than a thousand dollars to several thousand dollars. Factors influencing the price include the number of employees to monitor, the number of locations to track, and the information reporting requirements.

Which one's right for you? A time tracking system vendor can help you puzzle out the right solution for your needs.