• why did he have to do that? a claim for valid purchases can be made against receipts or as a ‘flat rate deduction’. as with most a sweet spot exists about 3m although the camera can hold it’s own at other distances (recommended range 1.5m to infinity). if they don’t see it for themselves, you need to talk to them and explain this to them, because most of the times it is just a communication issue. first the temperature dropped, then the lights got dim. i understand completely, but in time they come, sometimes not soon, but they do. 