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Report of Referee C -- LS16135/Shen 
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As previous referees report, this papers describes an interesting 
experimental method for generating random bits from Bell inequality 
measurements. Both referees agree that the paper is interesting, the 
methods and results are sound and significant. The only point is there 
sufficient elements of novelty, in particular respect to Ref.10, for 
guaranteeing that this paper is non incremental and suited for 
publication in PRL? In my opinion, the answer of authors to referees 
point out sufficient elements of novelty for supporting publication in 
PRL. Thus, I suggest accepting it. 

Only, I think these advantages should also be clearly reported 
(substantially as they are in the answer to referees) in the 
introduction of the letter. As a further minor remark, due to the 
generality of PRL reader, I suggest to quote at least some review 
paper where mentioning Bell inequalities and entangled photons 
generation (e.g. Physics Reports 413 (2005) 319).