In my world, telekinesis is a common ability, to the point that it is unusual not to be able to use it to some degree. It is an ability that was genetically grafted onto the human genome when humanity had access to advanced technology. A series of wars, and technology disrupting magic use have lowered the majority of my world's tech infrastructure to a tech level ranging from mideval to Pre-electricity industrial revolution. There are pockets of advanced tech here and there, but these areas are not the focus of the question at hand.
Telekinesis cannot lift more weight than your own approximate level of physical strength. You cannot move living objects, such as people, plants or animals. You can only throw something with telekinesis about as hard as you could physically throw the same object. Small microorganisms and bacteria (like those found in water) make telekinesis up to 50% harder to use, but don't interfere to the same degree as larger life forms. Using telekinesis is mentally and physically draining. The more precise the attempted movement, the more mental strain. The more force behind your telekinesis, the more physical strain there is. You cannot feel an object using telekinesis; you can only observe its effects using your own body's senses.
At the time telekinesis was discovered, locks were electronic, and could not be tampered with via telekinesis. Since then, physical mechanical locks have become the new standard as electricity is no longer commonly available.
I'm wondering what changes would need to be made to a mechanical lock to prevent it from being picked or opened with telekinesis by anyone but the owner of the lock, or possibly the locksmith.
What changes would need to be made to make locks reasonably resistant to the type of telekinesis described?
It doesn't need to be perfect, but it should be at least reliable enough that only a specialist would be able to pick locks with telekinesis.
(if there is anything I can do to clarify or improve on the question, please, let me know in the comments.)