Can I digitally sign a PDF?

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Tags

1. #signature
2. #because
3. #better
4. #image
5. #handwritten
6. #signatures
7. #digitally
8. #authenticity
9. #document
10. #digital
11. #encrypted
12. #information
13. #paper
14. #include
15. #based
16. #verify
17. #photo
18. #their