This smartphone accessory made its debut with the Motorola Atrix in 2011, but never really caught on. Why? How about the fact that it didn’t work with every Motorola phone, its keyboard was hard to type on, the touchpad was finicky, and the thing cost more than $200? And at a time Google was pushing Chromebooks, the Motorola Laptop Dock ran the Firefox browser. Maybe people just want their phones and notebooks to be separate devices.