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justone.cntct/ allows you to create fast, colorful, sustainable, trackable QR codes & smart tags with 99.9% uptime SLA. justone.cntct/ works differently than any other QR code generator and URL shortener. justone.cntct/ QR cards are readable as fast as 20ms by any camera and incredibly smart! justone.cntct/'s QR codes are licensed by QRDb. learn more »

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