Only with TimePilot Extreme Blue/Extreme Blue Enhanced and TimePilot Tap, because they don’t come with a keypad. With TimePilot Vetro and TimePilot PC, you don’t need to use the iButton at all. All employees can be assigned an ID number that they can enter on the keypad to clock in and out. The iButton is purely an option on these systems, although many of our customers like using iButtons and we recommend it to discourage “buddy-punching.”