Time cards have been around forever, but they're not always the most accurate way to report the number of hours worked. A higher-tech option is PocketClock/GPS. Installed in a Windows Mobile-equipped PDA, the software permits employees to clock in and out with a PIN code while they're on the jobsite at a location verified by GPS technology, or supervisors can clock in an entire crew. Attendance and location records can be transferred via the Internet or directly from the PDA to an office computer for export to a payroll system. "It definitely solves an ongoing problem that some companies don't even know they have," a judge said. Cost: $299. 888-788-8463. www.exaktime.com.