Community Tip - Visit the PTCooler (the community lounge) to get to know your fellow community members and check out some of Dale's Friday Humor posts! X
ThingMarks added to an Eyewear Experience should be 2 inches or larger and must be set to the exact same size as the physical ThingMark that will be scanned by ThingWorx View. Also note that the ThingMark width units is meters.
The exact sizing also matters for non-hololens apps - at least if you try to overlay to the real object