In message , Mark
writes
Waitrose have a different technique; their trolleys lock the wheels if
you attempt to take them too far.

so does our nearest Sainsburys.

Don't they just lock the wheels as you go over an activating pad? (I
can't see them fitting some sort of proximity device to activate the
locks.) If you were serious about borrowing one you could simply lift
the locking wheels over.

--
Simon

12) The Second Rule of Expectations
An EXPECTATION is a Premeditated resentment.