H: Yes, many people, especially when buying insurance for their families, are afraid of trouble, so they "sign" all the places that need the signature of the insured. This has laid a considerable hidden danger. Once the claim is settled, the insurance company can consider the contract invalid, refuse to pay or surrender on the grounds of "signing on behalf of the company".

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.