zabilWent to return my trolley at Lidl and found this. Since there is no way I'm giving up my trusty token, I guess I'm a trolley owner now
They don't work for side loaders, but you can get shopping cart keys for your key ring or whatever you use, that you can plug in and then immediately pull out once it is unlocked. Just don't be an ass and bring the cart back of course.
klzCorned beef keys work. They are usually available near to trollies too