- Smallest Size of Maker
- 3×3 cms for iOS. And 3×3 cms with high definition image is a must for Andriod. Andriod, it up to spec of user’s devices. (It is depend on the length of Auto focus)
- Biggest Size of Marker.
- It is not a big deal of how big of maker is, but marker should be display at least 40% of the scan’s area. It is about the scan distance. Your marker can be billboard, wall graffiti, outdoor sign , etc.