When a customer says the scratch was already there, the question is not who is right — it is who can show what the item looked like at handover.
A condition record taken at check-out, with photographs and a short checklist, turns that conversation into a two-minute comparison. Show the before, show the after, charge the difference. Customers rarely argue with photographs.
The same record protects the customer, which matters more than it sounds. A business that can prove damage can also prove its absence — and that is what makes people comfortable renting from you again.