Is it possible to password protect datasets?

Is it possible to password protect datasets? Is there any possibility of locking a dataset or PDS on mainframe using a password? I want to secure few of my datasets which can only be accessed upon providing the password. Actually, these datasets are to be maintained by client and they want that only authorised users be able to access them using Jcl or otherwise If someone knows of any utility or a way to achieve this please let me know. “; ; ; ;