Exhibit 23.4

Fahn Kanne & Co.

Head Office

Levinstein Tower

23 Menachem Begin Road

Tel-Aviv 66184, ISRAEL

P.O.B. 36172, 61361

T +972 3 7106666

F +972 3 7106660

www.gtfk.co.il

CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

We have issued our report dated September 27, 2011, with respect to the consolidated financial statements of Radiancy Inc. contained in this Registration Statement and Prospectus. We consent to the use of the aforementioned report in the Registration Statement and Prospectus, and to the use of our name as it appears under the caption “Experts.”

FAHN KANNE & CO.

/s/ Fahn Kanne & Co.

Tel Aviv, Israel

October 5, 2011