Weird news - In Britain, man banned from speaking to women strangers for 10 years, will face prison if he does

Sometimes one comes across strange court judgments, which do not make sense from a layman's perspective. A typical judgment from the court typically would involve either a person getting exonerated by a court, or being sentenced to some sort of community service, or to probation, or to a prison term. These are the sort of court judgments in criminal matters that we have come to expect, and if something deviates from such a judgment, it seems weird. What would you say to a court judgment where a man is sentenced to a prison term if he speaks to a unknown woman in public, unless it is an emergency. This was a strange case where a man walked up to a lady in her mid 20's, kissed her on the cheek and told her that he was a sex offender.
You can imagine the shock that this lady would have felt, including the fear that she would have felt. The only reassurance that she would have felt was that they were in public; the problem is that such a situation is so odd that one does not know whether such a man is safe in public. At the same time, since the offence conducted was not one to jail him for a long period of time (in a sort of preventive custody), there was not much that the judge could do; and hence the unusual judgment. But how does one make such a judgment effective ? How do you determine whether the man spoke to an unknown lady, or just replied back. Similarly, how do you determine what is an emergency ? Read this news article (link):

A 56-year-old Briton has been banned by court from speaking to women for 10 years after he told a woman he was a rapist who had just been freed from prison. David Delahunty, 56, faces up to five years in jail if he just says hello to a woman he does not know, The Sun reported. A judge imposed the ban after the man admitted sexual assault. The order bans him from speaking to any woman he does not know in a public place for the next 10 years, except in an emergency. He said he walked up to a woman stranger at a bus stop, kissed her on the cheek and told her she was a "bonny lass".