First time to know WeChat scanner can scan GS1 barcode. Post navigation Previous post: This is bad example of contrast and font size when making slides. Totally unreadable.Next post: Reverting my iMac from APFS to HFS+ Posted September 26, 2017 by makzan Update makzan View All → I teach web design. I write books on HTML5 games development. I host classes on mobile web and app development. I made animation with Adobe Flash (now Animate).