Scan QR Code: Meaning, Usage, and Examples

Meaning 1：read a QR code with a camera (Scan QR Code)

Scan QR Code 🔊

/ˈskæn ˌkjuː ˈɑːr koʊd/

v.phr.

To use your phone's camera to read the information stored in a QR code (the black and white square pattern).

Person scanning QR code with smartphone in cafe

read a QR code with a camera 🔊

➕

/riːd ə ˌkjuː ˈɑːr koʊd wɪð ə ˈkæmərə/

v.phr.

To use a smartphone or other device's camera to capture and decode the data embedded in a black-and-white square pattern (QR code), usually to open a website, show text, or initiate an action.

📁 Category：Technological Inventions 🔖 Level：Intermediate

📘 Details & Usage

📖 Root Explanation

"Scan" from Latin "scandere" (to climb/to examine); "QR" is an acronym for "Quick Response".

💡 Mnemonic

Imagine your camera 'climbing' (scan) over the black-and-white squares to 'quickly respond' (QR) with hidden information.

📖 Example

At the cafe, I used my phone to scan the QR code on the table to see the menu and order my lunch. 🔊 At the cafe, I used my phone to scan the QR code on the table to see the menu and order my lunch.

🔗 Collocations

scan a QR code with your phone – To use your mobile device's camera to read a QR code.

scan a QR code to pay – To complete a payment by scanning a QR code displayed at a checkout.

scan a QR code for information – To access details such as a website link or contact info by scanning a QR code.

🔄 Synonyms

read a QR code (v.phr.) – To interpret the data encoded in a QR code, essentially the same action as scanning.

decode a QR code (v.phr.) – To extract the information from a QR code using specialized software or hardware.

capture a QR code (v.phr.) – To point a camera at a QR code so that the device can recognize and process it.

🚫 Antonyms

ignore a QR code (v.phr.) – To deliberately not scan or pay attention to a QR code.

miss a QR code (v.phr.) – To fail to notice or capture a QR code, often because it is not in focus or too small.

🌱 Derivatives

scanner (n.) – A device or application that reads barcodes or QR codes.

scanning (adj./n.) – The process of reading a code or document electronically.

QR code reader (n.) – A tool (often an app) specifically designed to decode QR codes.

📖 Cultural Story

The QR Code was invented in 1994 by Masahiro Hara of Denso Wave, a subsidiary of Toyota, to track vehicle parts quickly. Its "Quick Response" name reflects the fast readability and large data capacity compared to traditional barcodes.