"Physical keys" are tangible objects, like pieces of metal or plastic, that are used to open or start something, such as a door, lock, or car. Full definition
The device utilizes on - screen buttons, while it sports a couple of physical keys on the right, its power / lock, volume up and volume down buttons. (androidheadlines.com)
If you take a closer look at the phone, you'll notice there are a couple of physical keys on it. (androidheadlines.com)
We are looking for a real - size accessory with physical keys, right? (ebookfriendly.com)