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Ever wondered what you do with one of these?
Well you need a smartphone first - any one as long as you can get apps for it.
Also known as reader or decoder.
It may be a link to a website, start a video, display contact details, add an event to your calendar, send coupons amongst others. 3G/Wi-Fi may be required for some actions.
Try this if it is not reading the code. Give the camera time to focus before trying a different distance or angle.
If you feel anything is missing or can be improved, please let me know. Thank you