Linked from

The 10 pages that link to QR code, each with the reason it gives.

• Reed–Solomon codeBroader topic: QR codes use Reed–Solomon redundancy to recover data when parts of the symbol are damaged.

• Coding theoryBroader topic: Reed–Solomon error correction allows decoding when parts of the symbol are obscured.

• Error detection and correctionBroader topic: Its error correction permits decoding despite partial damage or obscured modules.

• HyperlinkCompared with: A QR code can lead to a resource but is an encoded image rather than an embedded link.

• WeChatRelated: WeChat uses QR codes for account discovery, payments, and service access.

• BarcodeBroader topic: QR codes extend barcode use to URLs and other data that exceed typical linear symbols.

• URLRelated: QR codes make URLs accessible through printed or displayed patterns.

• Near-field communicationCompared with: QR codes provide contactless data access without NFC radios, but require optical scanning.

• Universal Product CodeCompared with: QR codes hold data in two dimensions, unlike the UPC’s one-dimensional bar pattern.

• Reed–Solomon error correctionBroader topic: Its Reed–Solomon redundancy allows data recovery when parts of the symbol are obscured.