Trolley 39

Barely a month since the last one, this one turned up at the junction of Kiln Lane and East Street. Once again, rather an odd place to leave such a thing, so I shall spend the next tea break working up a scenario or two.

Unlike trolley 38, this one did have the contraption on the front nearside wheel. No beeping when I crossed the boundary from public to Sainsbury's land, so if the sign about detectors is not just for show, the detector must be able to distinguish trolleys going in from trolleys going out. That is to say it can detect movement as well as presence. Does this seem likely?

Perhaps I ought to experiment with taking a trolley back and forth across the boundary and seeing whether burly security men come charging out of their dugout at the back of the car park?