Rubbish

This story is bunk. You are no more at risk from having your SatNav stolen with your postcode in it than you are having your address book, diary or contact book stolen with your *exact address* stolen. In fact, in some cases, you are less at risk with the postcode, especially if you share it - i.e. live in a block of flats.

This is the sort of uninformed twaddle that scares people about technology. Other examples include people worrying that Facebook feeds might allow their friends to figure out what they are doing (shock horror) that geotagging Flickr photos may indicate the area in which you live (not as well as the electoral register) or the idea that spammers/phishers somehow have a particular interest in you individually (they don't, you're just one of a huge number of potential targets).

Everyone carries on as if when we lived in villages and married our cousins, we had perfectly anonymous lives - when the reverse was true. Nobody complained about 'predictive marketing' when the butcher stopped the village pagan and asked if they wanted a nice lamb to sacrifice on the solstice.