Is tracking your adult children OK or should parents learn to let go?

Is tracking your adult children OK or should parents learn to let go? Is it caring or overbearing? Many parents are turning to their phones to keep tabs on their adult children - but is this OK (if they agree to it) or is it a sign of mums and dads struggling to let go? Dad-of-two Steven Medway, 53, has his whole family set up on a tracking app and couldn't understand why it was such a divisive subject among fellow parents. He said it became particularly useful when his daughter Martha moved 100 miles away from home for university.