The full form of IP is Internet Protocol. An IP Address is a unique number which creates an identity of a device. That device must be capable to use the internet. IP Address of each device is different from that of other device and thus, each device can be identified uniquely when all of them are using the internet. If you type “what is my IP address” in Google, you can find the public IP Address of your device which you have used to open the site of Google.