See barcode and mobile tagging.
"2-D bar code." YourDictionary, n.d. Web. 08 December 2018. <https://www.yourdictionary.com/2-d-bar-code>.
2-D bar code. (n.d.). Retrieved December 08th, 2018, from https://www.yourdictionary.com/2-d-bar-code
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