We have tried demo tags with the Android demo app, it seems to work properly in our 30mx30m warehouse configuration. Although we already observed with two tags the slowing down of refresh on a smartphone with the Decawave application. The distance between tags and smartphone is less than 15 cm in the tests. My first question concerns the Distance between tags and smartphone. If I increses the distance to 30 m can I detect the tag and what is the maximaum distance between tag and gateway or smartphone? The second question : if i have 50 tags in a space of 500m x50 how many ancres can I uses?