Anand, it is good that you are thinking of the convenience to students.
Your students can carry PDF notes with them on any device (rather than in fragile, heavy paper), and to annotate them, share them with colleagues in real time, and keep them for later reference.
It sounds like you want to make this harder. You might frustrate and alienate your students. [SWF will do that.] Smart students will quickly find a technical workaround, or find another supplier. If you help them, they may give you valuable word-of-mouth advertising for free.
If you don't want them to redistribute your notes and promote your teaching, you must convince them that it is good or in their interests to restrict their use of your valuable information.
Some practical measures in use in parts of my organisation are:
- Link to original sources (don't reproduce them)
- Watermark everything we create (so every individual page or screenshot advertises our name)
- Mention the ownership and confidentiality of each piece of information
- Don't reveal secret information to students
- Encourage respect for copyright by helping students to publish and claim ownership of information they generate
- Require students to build the training notes together, as learning and assessment activities
- Publish rather than hide, as much as we can.
- Design a learning experience that adds a lot of context, value and feeling that can't be stored in the notes.