Mohali: Calls for an advanced Hawk-eye and replay system have increased as a result of Sachin Tendulkar’s leg before decision and Mahendra Singh Dhoni’s catch by Shane Watson at the first slip, in India's first innings at the Mohali Test.

Many of the players believe that both of the final decisions were debatable, but they reportedly don’t want to speak out as they’re not supposed to question the umpire.

Rahul Dravid, however, remarked: “It’s important to introduce [a form of] technology, but a proper one that will clearly give the correct decision”.

Many believe that television replays are not fool proof. It’s understood that Tendulkar, after being trapped on the pads, asked non-striker Suresh Raina whether he was in line with the ball. But when reporters asked him about the decision, his response was that the ball turned much more than expected and that the replays were not clear.

To add to India’s woes, Umpire Billy Bowden declared Gautam Gambhir leg before to a delivery which struck the inside edge of his bat and then the pads in the second innings.

Right now, all Hawk-eye systems are based on the principle of triangulation, using visual images and a timing date provided by at least four high speed video cameras, located in different areas and at various angles around the stadium.

Some experts believe that the present system is not equipped to judge spin correctly.

This is the eighth instance that Tendulkar has got out in his 90s and the second time in Mohali. In the 2005 Test match against Pakistan, he was caught at gully by Asim Kamal, off Naved Ul Hassan for 94.