Evidence that silicone tape will interfer with Hot Spot technology Hot Spot replay shows no spot even though batsman was given out. A PERTH university lecturer has confirmed that silicone tape on the edge of a cricket bat can stop edges being picked up by the hotspot cameras infrared technology. Dr Masood Khan of Curtin University's School of Civil and Mechanical Engineering has been conducting research into thermal infrared image processing and says the tape has the capability to disguise edges on hotspot. However players from England and Australia have strenuously denied using the tape to cheat the technology and the International Cricket Council claims there is no investigation into any player relating to hotspot. Many players use fibreglass to cover their bats to protect them. Modern soft-pressed bats tend to crack quickly without protection. The chemical composition of silicone tape makes it work as an inhibitor for most radiation. Its physical characteristics also make it insensitive to minor physical impacts," Dr Khan said. Hotspot imaging systems operate at moderately high frame rates and under normal field conditions may only measure temperature changes of 0.5 degree Celsius or more. A bat with edges covered by silicone tape or a layer of silicone gel is more likely to produce temperature changes less significant than this when struck on the edge by a ball, meaning the hotspot system may not show the contact.