Lock your vehicles?

I've been reading the notices from the RCMP to lock your vehicles to keep your belongings safe. It doesn't matter if you lock your vehicle or not, there is a little black box-type piece of equipment that thieves are using that can unlock your car with the click of a button.   

I have a surveillance system on my house and I do lock my car every time I leave it, but while I am walking up the stairs to my home, I can hear my car being unlocked! I did not hit my fob by mistake, I re-lock it before entering my home.   

Doesn't make any difference "someone" has the ability to open locks with their equipment anyway.

Kerry Kozak