Hart has limitations currently based solely on offending data from Durham Constabulary and does not have access to information in the police national computer, said Ms Urwin. Which called as a problem Helen Ryan, head of law at the University of Winchester, also she added." Even without this system, [access to sufficient data is] a problem for the police." However she thinks the system is interesting in principle and that it had the potential to be hugely beneficial following extensive piloting. " I think it is actually a very positive development, " she added." I think, potentially, machines can be far more accurate –given the right data-than humans."