Was going to purchase on this afternoon.
Doing some research..
Great white 'ate anti-shark device'

by: Pia Akerman
From: The Australian
March 01, 2008 12:00AM

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AN electronic device designed to ward sharks away from surfers failed so spectacularly during a trial off South Africa that it was eaten by a great white.

An inquest heard yesterday the Shark Shield surf model was activated on a float carrying bait when the 3.6m female shark approached. Rather than being deterred by the device, the shark, under the gaze of the Natal Sharks Board, bit into it.

South Australian Deputy State Coroner Tony Schapel yesterday heard of the test failure during the inquest into the death of Jarrod Stehbens, who was taken by a great white shark while diving off Glenelg in South Australia in 2005.

Case 2

16 Mar, 2011 11:30 PM
A LOCAL abalone industry identity wants to have the effectiveness of electronic shark repellents tested following the death from a twin shark attack on abalone diver Peter Clarkson in February.

Western Abalone Processors manager Jim George has offered to fund more tests to find out if they prevent shark attacks.

Mr George said from what he understood, abalone diver Peter Clarkson, who was taken by two great white sharks near Coffin Bay, was wearing a shark repellent device.
Case 3 TESTING>

20 June, 2012 12:01PM ACST

www.abc.net.au/local/stories/2012/06/20/3529306.htm
quote...
Alternatively sharks were observed for 116 static bait trials near Neptune Island in South Australia, were not seen to be uniformly affected by the activation of the shield, with several sharks swimming within two metres of the activated device, and baits were also taken.
"In South Australia we found that the shark shield didn't impact the proportion of bait being consumed," Dr Huveneers said.

So basically how im reading this latest tests is........if the shark is in a predatory mode The shark shield does not prevent a shark attack?