QR (Quick Response) codes are two-dimensional barcodes that are scannable by smartphone cameras when you download the appropriate QR reader app. You can generate your own QR code with the information you want others to read on their phones quickly. One type of QR code generator can embed a URL, text, a phone number, or a ready-to-send SMS message into a QR code. The other multi-colored code is from Microsoft and can embed the same type of information. Both tags are free to create and use, each one requires its own QR code reader.
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