Which of the following would you use to send data from a web connected point-of-sale system to Google Analytics?

• javaScript tracking code
• Campaign Tracking parameter
• Google Analytics mobile SDK
• Measurement protocol
• Any of these would be appropriate

The Correct Answer is:

• Measurement protocol

Explanation: A standard set of rules for collecting and sending hits from any internet-connected device to Google Analytics. The Measurement Protocol lets you send data to Google Analytics from any internet-connected device.

You can read more here: https://support.google.com/analytics/answer/6086079?hl=en