5be66b0e_Conferences_Committee____OWASP__Rationale
[Policy] Speakers must sign a Speaker Agreement [Last Updated] N/A [Applicability] Speakers [Votes] N/A [Rationale] 
The allows OWASP to use the speaker's materials as well as their likeness as well as set some boundaries for content. Electronic signatures are permissible.
Global Conferences Committee/ - OWASP