Under no circumstance should you allow you friend to use your ID to borrow library materials. Borrowing materials calls upon one to undertake the responsibility of taking care of them and making sure they are returned in good condition. In case of damage or loss, you will be liable to pay the replacement value of the item borrowed as it was taken using your student, in line with the library guidelines. Library staff are under obligation to maintain patron privacy and not transfer the liability to another card holder.