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No quick tech fix for bowlers

Reuters, Melbourne
The ICC is cautiously optimistic that wearable sensors can provide the technological breakthrough needed to stamp out illegal bowling actions but does not expect them to be ready for trial in matches before mid-2015.
Geoff Allardice, the International Cricket Council's general manager of cricket, told Reuters in an interview on Wednesday that there has been lots of progress in using the technology but stumbling blocks remain to deploying it in matches.
The ICC on Tuesday banned off-spinner Saeed Ajmal, Pakistan's most prolific test wicket-taker among active players, after biomechanic tests found all his deliveries broke the limit for straightening of the elbow joint.
The latest in a string of suspensions for internationals over their bowling actions, Ajmal's ban has fanned fears that 'chucking' is rife at the highest level of the game but it has also been applauded as a timely crackdown on a highly contentious and often elusive problem.
Where umpires have often been reluctant to report their suspicions to match officials, the ICC hopes technology can eliminate subjectivity from the equation, making violations clear-cut through measured, real-time data.
The ICC has been working with Australian researchers to develop wearable "inertial" sensors that can measure bowlers' actions against the permissible limit for over two years.
The programme has reached key milestones and is now in its third and final phase but challenges remain, believes Allardice.
"There's a fair bit of work to do before we're going to be able to use them in a match setting, ” he said.
"This next stage is probably going to take 18 months to two years. You wouldn't expect it to be trialled in a match setting until mid-2015 at the earliest.
" But the science is encouraging."
The sensors, which are attached to the bowler's upper arm and forearm have reached the point where they can successfully detect the moment when a ball is released in a delivery.
While that much is already useful in analysis, the sensors still lack the capability to measure the arm's straightness during the bowling arc, a key to determining the fine line between a legal action and chucking.
"At this stage we're looking to automatically detect the position of the arm at the release with some software that is receiving the signals from the sensors... and how to capture that without any (competing) information," said Allardice, a former first-class batsman and senior manager at Australia's cricket board.
The mounting of the sensors also has yet to be perfected so the data cannot be compromised to an intolerable extent.