How Legal is Biometric Technology?

Biometric time clocks and employee clock-in software is changing the face of our workplaces. Who has not asked a coworker to clock in for them when they're running late? Most companies using the technology gain an additional level of security, what with today's political atmosphere, but how legal is it for a company to gather the biological information of an employee?

Biometric time clocks and employee clock-in software is changing the face of our workplaces. Who has not asked a coworker to clock in for t...